Home / 31,636.90-43,669.29-22,207.78

Finding the Fourth Proportional to 31,636.90, 43,669.29 and 22,207.78

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Solution

The fourth proportional to 31,636.90, 43,669.29 and 22,207.78 is: 30,654.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,636.90 : 43,669.29 = 22,207.78 : x
  2. Step 2: Convert to fraction form
    31,636.90/43,669.29 = 22,207.78/x
  3. Step 3: Cross multiply
    31,636.90x = 43,669.29 × 22,207.78
  4. Step 4: Simplify right side
    31,636.90x = 969,797,985.08
  5. Step 5: Solve for x
    x = 969,797,985.08/31,636.90
  6. Step 6: Final answer
    x = 30,654.01

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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.