Home / 47,311.28-70,970.88-12,251.60

Finding the Fourth Proportional to 47,311.28, 70,970.88 and 12,251.60

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Solution

The fourth proportional to 47,311.28, 70,970.88 and 12,251.60 is: 18,378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,311.28 : 70,970.88 = 12,251.60 : x
  2. Step 2: Convert to fraction form
    47,311.28/70,970.88 = 12,251.60/x
  3. Step 3: Cross multiply
    47,311.28x = 70,970.88 × 12,251.60
  4. Step 4: Simplify right side
    47,311.28x = 869,506,833.41
  5. Step 5: Solve for x
    x = 869,506,833.41/47,311.28
  6. Step 6: Final answer
    x = 18,378.43

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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.