Home / 12,387.29-18,583.77-5,368.48

Finding the Fourth Proportional to 12,387.29, 18,583.77 and 5,368.48

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Solution

The fourth proportional to 12,387.29, 18,583.77 and 5,368.48 is: 8,053.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.29 : 18,583.77 = 5,368.48 : x
  2. Step 2: Convert to fraction form
    12,387.29/18,583.77 = 5,368.48/x
  3. Step 3: Cross multiply
    12,387.29x = 18,583.77 × 5,368.48
  4. Step 4: Simplify right side
    12,387.29x = 99,766,609.18
  5. Step 5: Solve for x
    x = 99,766,609.18/12,387.29
  6. Step 6: Final answer
    x = 8,053.95

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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.