Home / 31,379.20-47,053.60-18,235.36

Finding the Fourth Proportional to 31,379.20, 47,053.60 and 18,235.36

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Solution

The fourth proportional to 31,379.20, 47,053.60 and 18,235.36 is: 27,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.20 : 47,053.60 = 18,235.36 : x
  2. Step 2: Convert to fraction form
    31,379.20/47,053.60 = 18,235.36/x
  3. Step 3: Cross multiply
    31,379.20x = 47,053.60 × 18,235.36
  4. Step 4: Simplify right side
    31,379.20x = 858,039,335.30
  5. Step 5: Solve for x
    x = 858,039,335.30/31,379.20
  6. Step 6: Final answer
    x = 27,344.21

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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.