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Finding the Fourth Proportional to 15,126.71, 20,873.15 and 8,752.31

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Solution

The fourth proportional to 15,126.71, 20,873.15 and 8,752.31 is: 12,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.71 : 20,873.15 = 8,752.31 : x
  2. Step 2: Convert to fraction form
    15,126.71/20,873.15 = 8,752.31/x
  3. Step 3: Cross multiply
    15,126.71x = 20,873.15 × 8,752.31
  4. Step 4: Simplify right side
    15,126.71x = 182,688,235.71
  5. Step 5: Solve for x
    x = 182,688,235.71/15,126.71
  6. Step 6: Final answer
    x = 12,077.20

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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.