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Finding the Fourth Proportional to 22,257.66, 30,702.87 and 15,885.66

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Solution

The fourth proportional to 22,257.66, 30,702.87 and 15,885.66 is: 21,913.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,257.66 : 30,702.87 = 15,885.66 : x
  2. Step 2: Convert to fraction form
    22,257.66/30,702.87 = 15,885.66/x
  3. Step 3: Cross multiply
    22,257.66x = 30,702.87 × 15,885.66
  4. Step 4: Simplify right side
    22,257.66x = 487,735,353.84
  5. Step 5: Solve for x
    x = 487,735,353.84/22,257.66
  6. Step 6: Final answer
    x = 21,913.15

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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.