Home / 25,686.40-38,521.92-13,367.68

Finding the Fourth Proportional to 25,686.40, 38,521.92 and 13,367.68

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Solution

The fourth proportional to 25,686.40, 38,521.92 and 13,367.68 is: 20,047.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,686.40 : 38,521.92 = 13,367.68 : x
  2. Step 2: Convert to fraction form
    25,686.40/38,521.92 = 13,367.68/x
  3. Step 3: Cross multiply
    25,686.40x = 38,521.92 × 13,367.68
  4. Step 4: Simplify right side
    25,686.40x = 514,948,699.55
  5. Step 5: Solve for x
    x = 514,948,699.55/25,686.40
  6. Step 6: Final answer
    x = 20,047.52

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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.