Home / 31,636.04-43,656.35-18,207.72

Finding the Fourth Proportional to 31,636.04, 43,656.35 and 18,207.72

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Solution

The fourth proportional to 31,636.04, 43,656.35 and 18,207.72 is: 25,125.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,636.04 : 43,656.35 = 18,207.72 : x
  2. Step 2: Convert to fraction form
    31,636.04/43,656.35 = 18,207.72/x
  3. Step 3: Cross multiply
    31,636.04x = 43,656.35 × 18,207.72
  4. Step 4: Simplify right side
    31,636.04x = 794,882,505.98
  5. Step 5: Solve for x
    x = 794,882,505.98/31,636.04
  6. Step 6: Final answer
    x = 25,125.86

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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.