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Finding the Fourth Proportional to 15,127.14, 20,873.86 and 8,411.69

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Solution

The fourth proportional to 15,127.14, 20,873.86 and 8,411.69 is: 11,607.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.14 : 20,873.86 = 8,411.69 : x
  2. Step 2: Convert to fraction form
    15,127.14/20,873.86 = 8,411.69/x
  3. Step 3: Cross multiply
    15,127.14x = 20,873.86 × 8,411.69
  4. Step 4: Simplify right side
    15,127.14x = 175,584,329.72
  5. Step 5: Solve for x
    x = 175,584,329.72/15,127.14
  6. Step 6: Final answer
    x = 11,607.24

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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.