Home / 31,813.56-43,900.15-18,385.68

Finding the Fourth Proportional to 31,813.56, 43,900.15 and 18,385.68

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Solution

The fourth proportional to 31,813.56, 43,900.15 and 18,385.68 is: 25,370.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,813.56 : 43,900.15 = 18,385.68 : x
  2. Step 2: Convert to fraction form
    31,813.56/43,900.15 = 18,385.68/x
  3. Step 3: Cross multiply
    31,813.56x = 43,900.15 × 18,385.68
  4. Step 4: Simplify right side
    31,813.56x = 807,134,314.70
  5. Step 5: Solve for x
    x = 807,134,314.70/31,813.56
  6. Step 6: Final answer
    x = 25,370.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.