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Finding the Fourth Proportional to 31,232.80, 43,109.80 and 17,811.12

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Solution

The fourth proportional to 31,232.80, 43,109.80 and 17,811.12 is: 24,584.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,232.80 : 43,109.80 = 17,811.12 : x
  2. Step 2: Convert to fraction form
    31,232.80/43,109.80 = 17,811.12/x
  3. Step 3: Cross multiply
    31,232.80x = 43,109.80 × 17,811.12
  4. Step 4: Simplify right side
    31,232.80x = 767,833,820.98
  5. Step 5: Solve for x
    x = 767,833,820.98/31,232.80
  6. Step 6: Final answer
    x = 24,584.21

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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.