Home / 15,781.74-21,769.61-10,114.48

Finding the Fourth Proportional to 15,781.74, 21,769.61 and 10,114.48

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Solution

The fourth proportional to 15,781.74, 21,769.61 and 10,114.48 is: 13,952.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.74 : 21,769.61 = 10,114.48 : x
  2. Step 2: Convert to fraction form
    15,781.74/21,769.61 = 10,114.48/x
  3. Step 3: Cross multiply
    15,781.74x = 21,769.61 × 10,114.48
  4. Step 4: Simplify right side
    15,781.74x = 220,188,176.10
  5. Step 5: Solve for x
    x = 220,188,176.10/15,781.74
  6. Step 6: Final answer
    x = 13,952.08

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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.