Home / 18,351.42-25,332.72-12,391.17

Finding the Fourth Proportional to 18,351.42, 25,332.72 and 12,391.17

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Solution

The fourth proportional to 18,351.42, 25,332.72 and 12,391.17 is: 17,105.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.42 : 25,332.72 = 12,391.17 : x
  2. Step 2: Convert to fraction form
    18,351.42/25,332.72 = 12,391.17/x
  3. Step 3: Cross multiply
    18,351.42x = 25,332.72 × 12,391.17
  4. Step 4: Simplify right side
    18,351.42x = 313,902,040.08
  5. Step 5: Solve for x
    x = 313,902,040.08/18,351.42
  6. Step 6: Final answer
    x = 17,105.05

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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.