Home / 31,246.25-43,121.72-17,820.09

Finding the Fourth Proportional to 31,246.25, 43,121.72 and 17,820.09

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Solution

The fourth proportional to 31,246.25, 43,121.72 and 17,820.09 is: 24,592.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,246.25 : 43,121.72 = 17,820.09 : x
  2. Step 2: Convert to fraction form
    31,246.25/43,121.72 = 17,820.09/x
  3. Step 3: Cross multiply
    31,246.25x = 43,121.72 × 17,820.09
  4. Step 4: Simplify right side
    31,246.25x = 768,432,975.91
  5. Step 5: Solve for x
    x = 768,432,975.91/31,246.25
  6. Step 6: Final answer
    x = 24,592.81

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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.