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Finding the Fourth Proportional to 17,148.90, 25,719.45 and 8,259.70

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Solution

The fourth proportional to 17,148.90, 25,719.45 and 8,259.70 is: 12,387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,148.90 : 25,719.45 = 8,259.70 : x
  2. Step 2: Convert to fraction form
    17,148.90/25,719.45 = 8,259.70/x
  3. Step 3: Cross multiply
    17,148.90x = 25,719.45 × 8,259.70
  4. Step 4: Simplify right side
    17,148.90x = 212,434,941.17
  5. Step 5: Solve for x
    x = 212,434,941.17/17,148.90
  6. Step 6: Final answer
    x = 12,387.67

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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.