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Finding the Fourth Proportional to 25,695.80, 35,471.14 and 15,627.48

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Solution

The fourth proportional to 25,695.80, 35,471.14 and 15,627.48 is: 21,572.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,695.80 : 35,471.14 = 15,627.48 : x
  2. Step 2: Convert to fraction form
    25,695.80/35,471.14 = 15,627.48/x
  3. Step 3: Cross multiply
    25,695.80x = 35,471.14 × 15,627.48
  4. Step 4: Simplify right side
    25,695.80x = 554,324,422.72
  5. Step 5: Solve for x
    x = 554,324,422.72/25,695.80
  6. Step 6: Final answer
    x = 21,572.57

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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.