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Finding the Fourth Proportional to 29,470.60, 44,205.90 and 20,139.40

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Solution

The fourth proportional to 29,470.60, 44,205.90 and 20,139.40 is: 30,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,470.60 : 44,205.90 = 20,139.40 : x
  2. Step 2: Convert to fraction form
    29,470.60/44,205.90 = 20,139.40/x
  3. Step 3: Cross multiply
    29,470.60x = 44,205.90 × 20,139.40
  4. Step 4: Simplify right side
    29,470.60x = 890,280,302.46
  5. Step 5: Solve for x
    x = 890,280,302.46/29,470.60
  6. Step 6: Final answer
    x = 30,209.10

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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.