Home / 15,517.70-21,436.02-14,941.61

Finding the Fourth Proportional to 15,517.70, 21,436.02 and 14,941.61

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Solution

The fourth proportional to 15,517.70, 21,436.02 and 14,941.61 is: 20,640.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.70 : 21,436.02 = 14,941.61 : x
  2. Step 2: Convert to fraction form
    15,517.70/21,436.02 = 14,941.61/x
  3. Step 3: Cross multiply
    15,517.70x = 21,436.02 × 14,941.61
  4. Step 4: Simplify right side
    15,517.70x = 320,288,468.90
  5. Step 5: Solve for x
    x = 320,288,468.90/15,517.70
  6. Step 6: Final answer
    x = 20,640.21

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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.