Home / 20,606.59-28,437.11-11,175.15

Finding the Fourth Proportional to 20,606.59, 28,437.11 and 11,175.15

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Solution

The fourth proportional to 20,606.59, 28,437.11 and 11,175.15 is: 15,421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.59 : 28,437.11 = 11,175.15 : x
  2. Step 2: Convert to fraction form
    20,606.59/28,437.11 = 11,175.15/x
  3. Step 3: Cross multiply
    20,606.59x = 28,437.11 × 11,175.15
  4. Step 4: Simplify right side
    20,606.59x = 317,788,913.94
  5. Step 5: Solve for x
    x = 317,788,913.94/20,606.59
  6. Step 6: Final answer
    x = 15,421.71

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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.