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Finding the Fourth Proportional to 20,612.48, 30,890.76 and 9,494.72

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Solution

The fourth proportional to 20,612.48, 30,890.76 and 9,494.72 is: 14,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.48 : 30,890.76 = 9,494.72 : x
  2. Step 2: Convert to fraction form
    20,612.48/30,890.76 = 9,494.72/x
  3. Step 3: Cross multiply
    20,612.48x = 30,890.76 × 9,494.72
  4. Step 4: Simplify right side
    20,612.48x = 293,299,116.79
  5. Step 5: Solve for x
    x = 293,299,116.79/20,612.48
  6. Step 6: Final answer
    x = 14,229.20

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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.