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Finding the Fourth Proportional to 25,724.71, 38,560.71 and 17,405.56

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Solution

The fourth proportional to 25,724.71, 38,560.71 and 17,405.56 is: 26,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,724.71 : 38,560.71 = 17,405.56 : x
  2. Step 2: Convert to fraction form
    25,724.71/38,560.71 = 17,405.56/x
  3. Step 3: Cross multiply
    25,724.71x = 38,560.71 × 17,405.56
  4. Step 4: Simplify right side
    25,724.71x = 671,170,751.55
  5. Step 5: Solve for x
    x = 671,170,751.55/25,724.71
  6. Step 6: Final answer
    x = 26,090.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.