Home / 31,186.23-43,033.68-18,439.90

Finding the Fourth Proportional to 31,186.23, 43,033.68 and 18,439.90

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Solution

The fourth proportional to 31,186.23, 43,033.68 and 18,439.90 is: 25,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,186.23 : 43,033.68 = 18,439.90 : x
  2. Step 2: Convert to fraction form
    31,186.23/43,033.68 = 18,439.90/x
  3. Step 3: Cross multiply
    31,186.23x = 43,033.68 × 18,439.90
  4. Step 4: Simplify right side
    31,186.23x = 793,536,648.25
  5. Step 5: Solve for x
    x = 793,536,648.25/31,186.23
  6. Step 6: Final answer
    x = 25,445.10

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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.