Home / 18,380.79-25,356.14-12,011.12

Finding the Fourth Proportional to 18,380.79, 25,356.14 and 12,011.12

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Solution

The fourth proportional to 18,380.79, 25,356.14 and 12,011.12 is: 16,569.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.79 : 25,356.14 = 12,011.12 : x
  2. Step 2: Convert to fraction form
    18,380.79/25,356.14 = 12,011.12/x
  3. Step 3: Cross multiply
    18,380.79x = 25,356.14 × 12,011.12
  4. Step 4: Simplify right side
    18,380.79x = 304,555,593.57
  5. Step 5: Solve for x
    x = 304,555,593.57/18,380.79
  6. Step 6: Final answer
    x = 16,569.23

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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.