Home / 21,255.39-32,007.12-15,747.78

Finding the Fourth Proportional to 21,255.39, 32,007.12 and 15,747.78

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Solution

The fourth proportional to 21,255.39, 32,007.12 and 15,747.78 is: 23,713.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.39 : 32,007.12 = 15,747.78 : x
  2. Step 2: Convert to fraction form
    21,255.39/32,007.12 = 15,747.78/x
  3. Step 3: Cross multiply
    21,255.39x = 32,007.12 × 15,747.78
  4. Step 4: Simplify right side
    21,255.39x = 504,041,084.19
  5. Step 5: Solve for x
    x = 504,041,084.19/21,255.39
  6. Step 6: Final answer
    x = 23,713.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.