Home / 18,116.88-25,001.28-10,159.20

Finding the Fourth Proportional to 18,116.88, 25,001.28 and 10,159.20

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Solution

The fourth proportional to 18,116.88, 25,001.28 and 10,159.20 is: 14,019.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116.88 : 25,001.28 = 10,159.20 : x
  2. Step 2: Convert to fraction form
    18,116.88/25,001.28 = 10,159.20/x
  3. Step 3: Cross multiply
    18,116.88x = 25,001.28 × 10,159.20
  4. Step 4: Simplify right side
    18,116.88x = 253,993,003.78
  5. Step 5: Solve for x
    x = 253,993,003.78/18,116.88
  6. Step 6: Final answer
    x = 14,019.69

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1.5x scale

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.