Home / 20,683,646.85-28,546,535.76-15,713,910.12

Finding the Fourth Proportional to 20,683,646.85, 28,546,535.76 and 15,713,910.12

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Solution

The fourth proportional to 20,683,646.85, 28,546,535.76 and 15,713,910.12 is: 21,687,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683,646.85 : 28,546,535.76 = 15,713,910.12 : x
  2. Step 2: Convert to fraction form
    20,683,646.85/28,546,535.76 = 15,713,910.12/x
  3. Step 3: Cross multiply
    20,683,646.85x = 28,546,535.76 × 15,713,910.12
  4. Step 4: Simplify right side
    20,683,646.85x = 448,577,697,170,005.88
  5. Step 5: Solve for x
    x = 448,577,697,170,005.88/20,683,646.85
  6. Step 6: Final answer
    x = 21,687,553.48

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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.