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Finding the Fourth Proportional to 20,491.95, 30,737.79 and 5,700.96

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Solution

The fourth proportional to 20,491.95, 30,737.79 and 5,700.96 is: 8,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.95 : 30,737.79 = 5,700.96 : x
  2. Step 2: Convert to fraction form
    20,491.95/30,737.79 = 5,700.96/x
  3. Step 3: Cross multiply
    20,491.95x = 30,737.79 × 5,700.96
  4. Step 4: Simplify right side
    20,491.95x = 175,234,911.28
  5. Step 5: Solve for x
    x = 175,234,911.28/20,491.95
  6. Step 6: Final answer
    x = 8,551.40

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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.