Home / 20,730,016.70-28,616,597.42-13,391,428.84

Finding the Fourth Proportional to 20,730,016.70, 28,616,597.42 and 13,391,428.84

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Solution

The fourth proportional to 20,730,016.70, 28,616,597.42 and 13,391,428.84 is: 18,486,098.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,016.70 : 28,616,597.42 = 13,391,428.84 : x
  2. Step 2: Convert to fraction form
    20,730,016.70/28,616,597.42 = 13,391,428.84/x
  3. Step 3: Cross multiply
    20,730,016.70x = 28,616,597.42 × 13,391,428.84
  4. Step 4: Simplify right side
    20,730,016.70x = 383,217,127,992,857.62
  5. Step 5: Solve for x
    x = 383,217,127,992,857.62/20,730,016.70
  6. Step 6: Final answer
    x = 18,486,098.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.