Home / 31,615.80-43,631.07-18,187.06

Finding the Fourth Proportional to 31,615.80, 43,631.07 and 18,187.06

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Solution

The fourth proportional to 31,615.80, 43,631.07 and 18,187.06 is: 25,098.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,615.80 : 43,631.07 = 18,187.06 : x
  2. Step 2: Convert to fraction form
    31,615.80/43,631.07 = 18,187.06/x
  3. Step 3: Cross multiply
    31,615.80x = 43,631.07 × 18,187.06
  4. Step 4: Simplify right side
    31,615.80x = 793,520,887.95
  5. Step 5: Solve for x
    x = 793,520,887.95/31,615.80
  6. Step 6: Final answer
    x = 25,098.87

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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.