Home / 20,219,084.10-30,328,626.15-15,436,115.10

Finding the Fourth Proportional to 20,219,084.10, 30,328,626.15 and 15,436,115.10

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Solution

The fourth proportional to 20,219,084.10, 30,328,626.15 and 15,436,115.10 is: 23,154,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,084.10 : 30,328,626.15 = 15,436,115.10 : x
  2. Step 2: Convert to fraction form
    20,219,084.10/30,328,626.15 = 15,436,115.10/x
  3. Step 3: Cross multiply
    20,219,084.10x = 30,328,626.15 × 15,436,115.10
  4. Step 4: Simplify right side
    20,219,084.10x = 468,156,164,076,269.81
  5. Step 5: Solve for x
    x = 468,156,164,076,269.81/20,219,084.10
  6. Step 6: Final answer
    x = 23,154,172.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.