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Finding the Fourth Proportional to 25,854.78, 35,693.79 and 15,647.71

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Solution

The fourth proportional to 25,854.78, 35,693.79 and 15,647.71 is: 21,602.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,854.78 : 35,693.79 = 15,647.71 : x
  2. Step 2: Convert to fraction form
    25,854.78/35,693.79 = 15,647.71/x
  3. Step 3: Cross multiply
    25,854.78x = 35,693.79 × 15,647.71
  4. Step 4: Simplify right side
    25,854.78x = 558,526,074.72
  5. Step 5: Solve for x
    x = 558,526,074.72/25,854.78
  6. Step 6: Final answer
    x = 21,602.43

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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.