Home / 25,735.20-38,545.20-21,127.20

Finding the Fourth Proportional to 25,735.20, 38,545.20 and 21,127.20

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Solution

The fourth proportional to 25,735.20, 38,545.20 and 21,127.20 is: 31,643.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,735.20 : 38,545.20 = 21,127.20 : x
  2. Step 2: Convert to fraction form
    25,735.20/38,545.20 = 21,127.20/x
  3. Step 3: Cross multiply
    25,735.20x = 38,545.20 × 21,127.20
  4. Step 4: Simplify right side
    25,735.20x = 814,352,149.44
  5. Step 5: Solve for x
    x = 814,352,149.44/25,735.20
  6. Step 6: Final answer
    x = 31,643.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.