Home / 26,820.80-40,218.21-15,731.12

Finding the Fourth Proportional to 26,820.80, 40,218.21 and 15,731.12

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Solution

The fourth proportional to 26,820.80, 40,218.21 and 15,731.12 is: 23,589.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,820.80 : 40,218.21 = 15,731.12 : x
  2. Step 2: Convert to fraction form
    26,820.80/40,218.21 = 15,731.12/x
  3. Step 3: Cross multiply
    26,820.80x = 40,218.21 × 15,731.12
  4. Step 4: Simplify right side
    26,820.80x = 632,677,487.70
  5. Step 5: Solve for x
    x = 632,677,487.70/26,820.80
  6. Step 6: Final answer
    x = 23,589.06

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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.