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Finding the Fourth Proportional to 17,148.78, 25,719.26 and 8,259.57

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Solution

The fourth proportional to 17,148.78, 25,719.26 and 8,259.57 is: 12,387.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,148.78 : 25,719.26 = 8,259.57 : x
  2. Step 2: Convert to fraction form
    17,148.78/25,719.26 = 8,259.57/x
  3. Step 3: Cross multiply
    17,148.78x = 25,719.26 × 8,259.57
  4. Step 4: Simplify right side
    17,148.78x = 212,429,987.02
  5. Step 5: Solve for x
    x = 212,429,987.02/17,148.78
  6. Step 6: Final answer
    x = 12,387.47

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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.