Home / 28,136.28-38,825.46-15,560.76

Finding the Fourth Proportional to 28,136.28, 38,825.46 and 15,560.76

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Solution

The fourth proportional to 28,136.28, 38,825.46 and 15,560.76 is: 21,472.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.28 : 38,825.46 = 15,560.76 : x
  2. Step 2: Convert to fraction form
    28,136.28/38,825.46 = 15,560.76/x
  3. Step 3: Cross multiply
    28,136.28x = 38,825.46 × 15,560.76
  4. Step 4: Simplify right side
    28,136.28x = 604,153,664.95
  5. Step 5: Solve for x
    x = 604,153,664.95/28,136.28
  6. Step 6: Final answer
    x = 21,472.41

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Double scale
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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.