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Finding the Fourth Proportional to 30,491.92, 45,737.96 and 20,028.04

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Solution

The fourth proportional to 30,491.92, 45,737.96 and 20,028.04 is: 30,042.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,491.92 : 45,737.96 = 20,028.04 : x
  2. Step 2: Convert to fraction form
    30,491.92/45,737.96 = 20,028.04/x
  3. Step 3: Cross multiply
    30,491.92x = 45,737.96 × 20,028.04
  4. Step 4: Simplify right side
    30,491.92x = 916,041,692.40
  5. Step 5: Solve for x
    x = 916,041,692.40/30,491.92
  6. Step 6: Final answer
    x = 30,042.11

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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.