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Finding the Fourth Proportional to 15,125.46, 20,873.16 and 8,411.02

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Solution

The fourth proportional to 15,125.46, 20,873.16 and 8,411.02 is: 11,607.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.46 : 20,873.16 = 8,411.02 : x
  2. Step 2: Convert to fraction form
    15,125.46/20,873.16 = 8,411.02/x
  3. Step 3: Cross multiply
    15,125.46x = 20,873.16 × 8,411.02
  4. Step 4: Simplify right side
    15,125.46x = 175,564,566.22
  5. Step 5: Solve for x
    x = 175,564,566.22/15,125.46
  6. Step 6: Final answer
    x = 11,607.22

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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.