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Finding the Fourth Proportional to 15,132.92, 20,881.46 and 8,417.22

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Solution

The fourth proportional to 15,132.92, 20,881.46 and 8,417.22 is: 11,614.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,132.92 : 20,881.46 = 8,417.22 : x
  2. Step 2: Convert to fraction form
    15,132.92/20,881.46 = 8,417.22/x
  3. Step 3: Cross multiply
    15,132.92x = 20,881.46 × 8,417.22
  4. Step 4: Simplify right side
    15,132.92x = 175,763,842.74
  5. Step 5: Solve for x
    x = 175,763,842.74/15,132.92
  6. Step 6: Final answer
    x = 11,614.67

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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.