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Finding the Fourth Proportional to 15,059.58, 20,781.97 and 8,345.19

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Solution

The fourth proportional to 15,059.58, 20,781.97 and 8,345.19 is: 11,516.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.58 : 20,781.97 = 8,345.19 : x
  2. Step 2: Convert to fraction form
    15,059.58/20,781.97 = 8,345.19/x
  3. Step 3: Cross multiply
    15,059.58x = 20,781.97 × 8,345.19
  4. Step 4: Simplify right side
    15,059.58x = 173,429,488.22
  5. Step 5: Solve for x
    x = 173,429,488.22/15,059.58
  6. Step 6: Final answer
    x = 11,516.22

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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.