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Finding the Fourth Proportional to 13,608,000.10, 20,412,000.15 and 12,013,677.10

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Solution

The fourth proportional to 13,608,000.10, 20,412,000.15 and 12,013,677.10 is: 18,020,515.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,000.10 : 20,412,000.15 = 12,013,677.10 : x
  2. Step 2: Convert to fraction form
    13,608,000.10/20,412,000.15 = 12,013,677.10/x
  3. Step 3: Cross multiply
    13,608,000.10x = 20,412,000.15 × 12,013,677.10
  4. Step 4: Simplify right side
    13,608,000.10x = 245,223,178,767,251.53
  5. Step 5: Solve for x
    x = 245,223,178,767,251.53/13,608,000.10
  6. Step 6: Final answer
    x = 18,020,515.65

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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.