Home / 31,631.90-43,650.80-18,207.47

Finding the Fourth Proportional to 31,631.90, 43,650.80 and 18,207.47

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Solution

The fourth proportional to 31,631.90, 43,650.80 and 18,207.47 is: 25,125.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,631.90 : 43,650.80 = 18,207.47 : x
  2. Step 2: Convert to fraction form
    31,631.90/43,650.80 = 18,207.47/x
  3. Step 3: Cross multiply
    31,631.90x = 43,650.80 × 18,207.47
  4. Step 4: Simplify right side
    31,631.90x = 794,770,322.18
  5. Step 5: Solve for x
    x = 794,770,322.18/31,631.90
  6. Step 6: Final answer
    x = 25,125.60

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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.