Home / 20,382.53-28,141.70-12,737.48

Finding the Fourth Proportional to 20,382.53, 28,141.70 and 12,737.48

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Solution

The fourth proportional to 20,382.53, 28,141.70 and 12,737.48 is: 17,586.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.53 : 28,141.70 = 12,737.48 : x
  2. Step 2: Convert to fraction form
    20,382.53/28,141.70 = 12,737.48/x
  3. Step 3: Cross multiply
    20,382.53x = 28,141.70 × 12,737.48
  4. Step 4: Simplify right side
    20,382.53x = 358,454,136.52
  5. Step 5: Solve for x
    x = 358,454,136.52/20,382.53
  6. Step 6: Final answer
    x = 17,586.35

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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.