Home / 21,915.60-30,232.68-13,737.72

Finding the Fourth Proportional to 21,915.60, 30,232.68 and 13,737.72

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Solution

The fourth proportional to 21,915.60, 30,232.68 and 13,737.72 is: 18,951.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.60 : 30,232.68 = 13,737.72 : x
  2. Step 2: Convert to fraction form
    21,915.60/30,232.68 = 13,737.72/x
  3. Step 3: Cross multiply
    21,915.60x = 30,232.68 × 13,737.72
  4. Step 4: Simplify right side
    21,915.60x = 415,328,092.69
  5. Step 5: Solve for x
    x = 415,328,092.69/21,915.60
  6. Step 6: Final answer
    x = 18,951.25

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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.