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Finding the Fourth Proportional to 20,401.92, 30,602.86 and 7,254.81

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Solution

The fourth proportional to 20,401.92, 30,602.86 and 7,254.81 is: 10,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.92 : 30,602.86 = 7,254.81 : x
  2. Step 2: Convert to fraction form
    20,401.92/30,602.86 = 7,254.81/x
  3. Step 3: Cross multiply
    20,401.92x = 30,602.86 × 7,254.81
  4. Step 4: Simplify right side
    20,401.92x = 222,017,934.76
  5. Step 5: Solve for x
    x = 222,017,934.76/20,401.92
  6. Step 6: Final answer
    x = 10,882.21

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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.