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Finding the Fourth Proportional to 20,299.84, 30,447.92 and 7,151.52

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Solution

The fourth proportional to 20,299.84, 30,447.92 and 7,151.52 is: 10,726.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.84 : 30,447.92 = 7,151.52 : x
  2. Step 2: Convert to fraction form
    20,299.84/30,447.92 = 7,151.52/x
  3. Step 3: Cross multiply
    20,299.84x = 30,447.92 × 7,151.52
  4. Step 4: Simplify right side
    20,299.84x = 217,748,908.84
  5. Step 5: Solve for x
    x = 217,748,908.84/20,299.84
  6. Step 6: Final answer
    x = 10,726.63

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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.