Home / 31,628.74-43,654.94-18,207.78

Finding the Fourth Proportional to 31,628.74, 43,654.94 and 18,207.78

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Solution

The fourth proportional to 31,628.74, 43,654.94 and 18,207.78 is: 25,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.74 : 43,654.94 = 18,207.78 : x
  2. Step 2: Convert to fraction form
    31,628.74/43,654.94 = 18,207.78/x
  3. Step 3: Cross multiply
    31,628.74x = 43,654.94 × 18,207.78
  4. Step 4: Simplify right side
    31,628.74x = 794,859,543.43
  5. Step 5: Solve for x
    x = 794,859,543.43/31,628.74
  6. Step 6: Final answer
    x = 25,130.93

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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.