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Finding the Fourth Proportional to 20,332.76, 30,478.26 and 11,548.92

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Solution

The fourth proportional to 20,332.76, 30,478.26 and 11,548.92 is: 17,311.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.76 : 30,478.26 = 11,548.92 : x
  2. Step 2: Convert to fraction form
    20,332.76/30,478.26 = 11,548.92/x
  3. Step 3: Cross multiply
    20,332.76x = 30,478.26 × 11,548.92
  4. Step 4: Simplify right side
    20,332.76x = 351,990,986.48
  5. Step 5: Solve for x
    x = 351,990,986.48/20,332.76
  6. Step 6: Final answer
    x = 17,311.52

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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.