Home / 28,122.90-38,806.53-15,545.22

Finding the Fourth Proportional to 28,122.90, 38,806.53 and 15,545.22

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Solution

The fourth proportional to 28,122.90, 38,806.53 and 15,545.22 is: 21,450.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.90 : 38,806.53 = 15,545.22 : x
  2. Step 2: Convert to fraction form
    28,122.90/38,806.53 = 15,545.22/x
  3. Step 3: Cross multiply
    28,122.90x = 38,806.53 × 15,545.22
  4. Step 4: Simplify right side
    28,122.90x = 603,256,046.29
  5. Step 5: Solve for x
    x = 603,256,046.29/28,122.90
  6. Step 6: Final answer
    x = 21,450.71

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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.