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Finding the Fourth Proportional to 13,608,531.70, 20,412,797.55 and 12,522,030.10

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Solution

The fourth proportional to 13,608,531.70, 20,412,797.55 and 12,522,030.10 is: 18,783,045.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,531.70 : 20,412,797.55 = 12,522,030.10 : x
  2. Step 2: Convert to fraction form
    13,608,531.70/20,412,797.55 = 12,522,030.10/x
  3. Step 3: Cross multiply
    13,608,531.70x = 20,412,797.55 × 12,522,030.10
  4. Step 4: Simplify right side
    13,608,531.70x = 255,609,665,346,306.25
  5. Step 5: Solve for x
    x = 255,609,665,346,306.25/13,608,531.70
  6. Step 6: Final answer
    x = 18,783,045.15

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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.