Home / 18,717.53-28,062.25-11,320.47

Finding the Fourth Proportional to 18,717.53, 28,062.25 and 11,320.47

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Solution

The fourth proportional to 18,717.53, 28,062.25 and 11,320.47 is: 16,972.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.53 : 28,062.25 = 11,320.47 : x
  2. Step 2: Convert to fraction form
    18,717.53/28,062.25 = 11,320.47/x
  3. Step 3: Cross multiply
    18,717.53x = 28,062.25 × 11,320.47
  4. Step 4: Simplify right side
    18,717.53x = 317,677,830.96
  5. Step 5: Solve for x
    x = 317,677,830.96/18,717.53
  6. Step 6: Final answer
    x = 16,972.21

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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.