Home / 28,918.12-43,373.34-8,143.24

Finding the Fourth Proportional to 28,918.12, 43,373.34 and 8,143.24

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Solution

The fourth proportional to 28,918.12, 43,373.34 and 8,143.24 is: 12,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.12 : 43,373.34 = 8,143.24 : x
  2. Step 2: Convert to fraction form
    28,918.12/43,373.34 = 8,143.24/x
  3. Step 3: Cross multiply
    28,918.12x = 43,373.34 × 8,143.24
  4. Step 4: Simplify right side
    28,918.12x = 353,199,517.22
  5. Step 5: Solve for x
    x = 353,199,517.22/28,918.12
  6. Step 6: Final answer
    x = 12,213.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.