Home / 31,747.04-43,830.84-20,436.20

Finding the Fourth Proportional to 31,747.04, 43,830.84 and 20,436.20

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Solution

The fourth proportional to 31,747.04, 43,830.84 and 20,436.20 is: 28,214.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,747.04 : 43,830.84 = 20,436.20 : x
  2. Step 2: Convert to fraction form
    31,747.04/43,830.84 = 20,436.20/x
  3. Step 3: Cross multiply
    31,747.04x = 43,830.84 × 20,436.20
  4. Step 4: Simplify right side
    31,747.04x = 895,735,812.41
  5. Step 5: Solve for x
    x = 895,735,812.41/31,747.04
  6. Step 6: Final answer
    x = 28,214.78

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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.