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Finding the Fourth Proportional to 15,468.66, 21,345.12 and 8,753.22

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Solution

The fourth proportional to 15,468.66, 21,345.12 and 8,753.22 is: 12,078.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,468.66 : 21,345.12 = 8,753.22 : x
  2. Step 2: Convert to fraction form
    15,468.66/21,345.12 = 8,753.22/x
  3. Step 3: Cross multiply
    15,468.66x = 21,345.12 × 8,753.22
  4. Step 4: Simplify right side
    15,468.66x = 186,838,531.29
  5. Step 5: Solve for x
    x = 186,838,531.29/15,468.66
  6. Step 6: Final answer
    x = 12,078.52

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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.