Home / 15,918.39-21,977.33-10,255.95

Finding the Fourth Proportional to 15,918.39, 21,977.33 and 10,255.95

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Solution

The fourth proportional to 15,918.39, 21,977.33 and 10,255.95 is: 14,159.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.39 : 21,977.33 = 10,255.95 : x
  2. Step 2: Convert to fraction form
    15,918.39/21,977.33 = 10,255.95/x
  3. Step 3: Cross multiply
    15,918.39x = 21,977.33 × 10,255.95
  4. Step 4: Simplify right side
    15,918.39x = 225,398,397.61
  5. Step 5: Solve for x
    x = 225,398,397.61/15,918.39
  6. Step 6: Final answer
    x = 14,159.62

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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.