Home / 31,346.50-47,039.19-18,205.06

Finding the Fourth Proportional to 31,346.50, 47,039.19 and 18,205.06

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Solution

The fourth proportional to 31,346.50, 47,039.19 and 18,205.06 is: 27,318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,346.50 : 47,039.19 = 18,205.06 : x
  2. Step 2: Convert to fraction form
    31,346.50/47,039.19 = 18,205.06/x
  3. Step 3: Cross multiply
    31,346.50x = 47,039.19 × 18,205.06
  4. Step 4: Simplify right side
    31,346.50x = 856,351,276.30
  5. Step 5: Solve for x
    x = 856,351,276.30/31,346.50
  6. Step 6: Final answer
    x = 27,318.88

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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.