Home / 15,715.60-21,687.90-8,545.93

Finding the Fourth Proportional to 15,715.60, 21,687.90 and 8,545.93

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Solution

The fourth proportional to 15,715.60, 21,687.90 and 8,545.93 is: 11,793.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.60 : 21,687.90 = 8,545.93 : x
  2. Step 2: Convert to fraction form
    15,715.60/21,687.90 = 8,545.93/x
  3. Step 3: Cross multiply
    15,715.60x = 21,687.90 × 8,545.93
  4. Step 4: Simplify right side
    15,715.60x = 185,343,275.25
  5. Step 5: Solve for x
    x = 185,343,275.25/15,715.60
  6. Step 6: Final answer
    x = 11,793.59

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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.