Home / 28,082,812.10-42,124,218.15-18,509,000.90

Finding the Fourth Proportional to 28,082,812.10, 42,124,218.15 and 18,509,000.90

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Solution

The fourth proportional to 28,082,812.10, 42,124,218.15 and 18,509,000.90 is: 27,763,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082,812.10 : 42,124,218.15 = 18,509,000.90 : x
  2. Step 2: Convert to fraction form
    28,082,812.10/42,124,218.15 = 18,509,000.90/x
  3. Step 3: Cross multiply
    28,082,812.10x = 42,124,218.15 × 18,509,000.90
  4. Step 4: Simplify right side
    28,082,812.10x = 779,677,191,650,146.25
  5. Step 5: Solve for x
    x = 779,677,191,650,146.25/28,082,812.10
  6. Step 6: Final answer
    x = 27,763,501.35

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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.