Home / 31,837.24-43,930.50-18,405.90

Finding the Fourth Proportional to 31,837.24, 43,930.50 and 18,405.90

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Solution

The fourth proportional to 31,837.24, 43,930.50 and 18,405.90 is: 25,397.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,837.24 : 43,930.50 = 18,405.90 : x
  2. Step 2: Convert to fraction form
    31,837.24/43,930.50 = 18,405.90/x
  3. Step 3: Cross multiply
    31,837.24x = 43,930.50 × 18,405.90
  4. Step 4: Simplify right side
    31,837.24x = 808,580,389.95
  5. Step 5: Solve for x
    x = 808,580,389.95/31,837.24
  6. Step 6: Final answer
    x = 25,397.31

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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.