Home / 12,380.02-18,543.62-5,721.95

Finding the Fourth Proportional to 12,380.02, 18,543.62 and 5,721.95

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Solution

The fourth proportional to 12,380.02, 18,543.62 and 5,721.95 is: 8,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.02 : 18,543.62 = 5,721.95 : x
  2. Step 2: Convert to fraction form
    12,380.02/18,543.62 = 5,721.95/x
  3. Step 3: Cross multiply
    12,380.02x = 18,543.62 × 5,721.95
  4. Step 4: Simplify right side
    12,380.02x = 106,105,727.12
  5. Step 5: Solve for x
    x = 106,105,727.12/12,380.02
  6. Step 6: Final answer
    x = 8,570.73

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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.