Home / 18,411.36-25,397.16-11,332.80

Finding the Fourth Proportional to 18,411.36, 25,397.16 and 11,332.80

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Solution

The fourth proportional to 18,411.36, 25,397.16 and 11,332.80 is: 15,632.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.36 : 25,397.16 = 11,332.80 : x
  2. Step 2: Convert to fraction form
    18,411.36/25,397.16 = 11,332.80/x
  3. Step 3: Cross multiply
    18,411.36x = 25,397.16 × 11,332.80
  4. Step 4: Simplify right side
    18,411.36x = 287,820,934.85
  5. Step 5: Solve for x
    x = 287,820,934.85/18,411.36
  6. Step 6: Final answer
    x = 15,632.79

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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.