Home / 28,407.22-42,610.80-8,685.78

Finding the Fourth Proportional to 28,407.22, 42,610.80 and 8,685.78

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Solution

The fourth proportional to 28,407.22, 42,610.80 and 8,685.78 is: 13,028.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.22 : 42,610.80 = 8,685.78 : x
  2. Step 2: Convert to fraction form
    28,407.22/42,610.80 = 8,685.78/x
  3. Step 3: Cross multiply
    28,407.22x = 42,610.80 × 8,685.78
  4. Step 4: Simplify right side
    28,407.22x = 370,108,034.42
  5. Step 5: Solve for x
    x = 370,108,034.42/28,407.22
  6. Step 6: Final answer
    x = 13,028.66

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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.