Home / 25,781.21-38,606.18-16,989.47

Finding the Fourth Proportional to 25,781.21, 38,606.18 and 16,989.47

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Solution

The fourth proportional to 25,781.21, 38,606.18 and 16,989.47 is: 25,440.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,781.21 : 38,606.18 = 16,989.47 : x
  2. Step 2: Convert to fraction form
    25,781.21/38,606.18 = 16,989.47/x
  3. Step 3: Cross multiply
    25,781.21x = 38,606.18 × 16,989.47
  4. Step 4: Simplify right side
    25,781.21x = 655,898,258.95
  5. Step 5: Solve for x
    x = 655,898,258.95/25,781.21
  6. Step 6: Final answer
    x = 25,440.95

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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.