Home / 21,269.77-29,363.79-14,915.86

Finding the Fourth Proportional to 21,269.77, 29,363.79 and 14,915.86

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Solution

The fourth proportional to 21,269.77, 29,363.79 and 14,915.86 is: 20,591.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.77 : 29,363.79 = 14,915.86 : x
  2. Step 2: Convert to fraction form
    21,269.77/29,363.79 = 14,915.86/x
  3. Step 3: Cross multiply
    21,269.77x = 29,363.79 × 14,915.86
  4. Step 4: Simplify right side
    21,269.77x = 437,986,180.71
  5. Step 5: Solve for x
    x = 437,986,180.71/21,269.77
  6. Step 6: Final answer
    x = 20,591.96

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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.