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Finding the Fourth Proportional to 18,116.99, 25,001.12 and 10,159.19

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Solution

The fourth proportional to 18,116.99, 25,001.12 and 10,159.19 is: 14,019.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116.99 : 25,001.12 = 10,159.19 : x
  2. Step 2: Convert to fraction form
    18,116.99/25,001.12 = 10,159.19/x
  3. Step 3: Cross multiply
    18,116.99x = 25,001.12 × 10,159.19
  4. Step 4: Simplify right side
    18,116.99x = 253,990,952.49
  5. Step 5: Solve for x
    x = 253,990,952.49/18,116.99
  6. Step 6: Final answer
    x = 14,019.49

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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.