Home / 15,333.20-21,160.02-8,618.43

Finding the Fourth Proportional to 15,333.20, 21,160.02 and 8,618.43

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Solution

The fourth proportional to 15,333.20, 21,160.02 and 8,618.43 is: 11,893.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,333.20 : 21,160.02 = 8,618.43 : x
  2. Step 2: Convert to fraction form
    15,333.20/21,160.02 = 8,618.43/x
  3. Step 3: Cross multiply
    15,333.20x = 21,160.02 × 8,618.43
  4. Step 4: Simplify right side
    15,333.20x = 182,366,151.17
  5. Step 5: Solve for x
    x = 182,366,151.17/15,333.20
  6. Step 6: Final answer
    x = 11,893.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.