Home / 20,606.86-28,437.45-11,175.38

Finding the Fourth Proportional to 20,606.86, 28,437.45 and 11,175.38

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Solution

The fourth proportional to 20,606.86, 28,437.45 and 11,175.38 is: 15,422.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.86 : 28,437.45 = 11,175.38 : x
  2. Step 2: Convert to fraction form
    20,606.86/28,437.45 = 11,175.38/x
  3. Step 3: Cross multiply
    20,606.86x = 28,437.45 × 11,175.38
  4. Step 4: Simplify right side
    20,606.86x = 317,799,309.98
  5. Step 5: Solve for x
    x = 317,799,309.98/20,606.86
  6. Step 6: Final answer
    x = 15,422.02

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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.