Home / 18,781.58-28,153.85-10,465.52

Finding the Fourth Proportional to 18,781.58, 28,153.85 and 10,465.52

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Solution

The fourth proportional to 18,781.58, 28,153.85 and 10,465.52 is: 15,687.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.58 : 28,153.85 = 10,465.52 : x
  2. Step 2: Convert to fraction form
    18,781.58/28,153.85 = 10,465.52/x
  3. Step 3: Cross multiply
    18,781.58x = 28,153.85 × 10,465.52
  4. Step 4: Simplify right side
    18,781.58x = 294,644,487.16
  5. Step 5: Solve for x
    x = 294,644,487.16/18,781.58
  6. Step 6: Final answer
    x = 15,687.95

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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.