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Finding the Fourth Proportional to 15,029.43, 20,742.17 and 8,656.25

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Solution

The fourth proportional to 15,029.43, 20,742.17 and 8,656.25 is: 11,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,029.43 : 20,742.17 = 8,656.25 : x
  2. Step 2: Convert to fraction form
    15,029.43/20,742.17 = 8,656.25/x
  3. Step 3: Cross multiply
    15,029.43x = 20,742.17 × 8,656.25
  4. Step 4: Simplify right side
    15,029.43x = 179,549,262.07
  5. Step 5: Solve for x
    x = 179,549,262.07/15,029.43
  6. Step 6: Final answer
    x = 11,946.51

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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.