Home / 15,715.09-21,687.24-8,545.50

Finding the Fourth Proportional to 15,715.09, 21,687.24 and 8,545.50

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Solution

The fourth proportional to 15,715.09, 21,687.24 and 8,545.50 is: 11,793.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.09 : 21,687.24 = 8,545.50 : x
  2. Step 2: Convert to fraction form
    15,715.09/21,687.24 = 8,545.50/x
  3. Step 3: Cross multiply
    15,715.09x = 21,687.24 × 8,545.50
  4. Step 4: Simplify right side
    15,715.09x = 185,328,309.42
  5. Step 5: Solve for x
    x = 185,328,309.42/15,715.09
  6. Step 6: Final answer
    x = 11,793.02

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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.