Home / 31,713.90-43,765.05-18,285.09

Finding the Fourth Proportional to 31,713.90, 43,765.05 and 18,285.09

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Solution

The fourth proportional to 31,713.90, 43,765.05 and 18,285.09 is: 25,233.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,713.90 : 43,765.05 = 18,285.09 : x
  2. Step 2: Convert to fraction form
    31,713.90/43,765.05 = 18,285.09/x
  3. Step 3: Cross multiply
    31,713.90x = 43,765.05 × 18,285.09
  4. Step 4: Simplify right side
    31,713.90x = 800,247,878.10
  5. Step 5: Solve for x
    x = 800,247,878.10/31,713.90
  6. Step 6: Final answer
    x = 25,233.35

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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.