Home / 47,439.25-71,158.85-12,378.90

Finding the Fourth Proportional to 47,439.25, 71,158.85 and 12,378.90

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Solution

The fourth proportional to 47,439.25, 71,158.85 and 12,378.90 is: 18,568.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,439.25 : 71,158.85 = 12,378.90 : x
  2. Step 2: Convert to fraction form
    47,439.25/71,158.85 = 12,378.90/x
  3. Step 3: Cross multiply
    47,439.25x = 71,158.85 × 12,378.90
  4. Step 4: Simplify right side
    47,439.25x = 880,868,493.22
  5. Step 5: Solve for x
    x = 880,868,493.22/47,439.25
  6. Step 6: Final answer
    x = 18,568.35

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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.