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Finding the Fourth Proportional to 22,280.52, 30,718.80 and 15,914.73

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Solution

The fourth proportional to 22,280.52, 30,718.80 and 15,914.73 is: 21,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.52 : 30,718.80 = 15,914.73 : x
  2. Step 2: Convert to fraction form
    22,280.52/30,718.80 = 15,914.73/x
  3. Step 3: Cross multiply
    22,280.52x = 30,718.80 × 15,914.73
  4. Step 4: Simplify right side
    22,280.52x = 488,881,407.92
  5. Step 5: Solve for x
    x = 488,881,407.92/22,280.52
  6. Step 6: Final answer
    x = 21,942.10

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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.