Home / 28,132.80-42,201.36-8,409.84

Finding the Fourth Proportional to 28,132.80, 42,201.36 and 8,409.84

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Solution

The fourth proportional to 28,132.80, 42,201.36 and 8,409.84 is: 12,615.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.80 : 42,201.36 = 8,409.84 : x
  2. Step 2: Convert to fraction form
    28,132.80/42,201.36 = 8,409.84/x
  3. Step 3: Cross multiply
    28,132.80x = 42,201.36 × 8,409.84
  4. Step 4: Simplify right side
    28,132.80x = 354,906,685.38
  5. Step 5: Solve for x
    x = 354,906,685.38/28,132.80
  6. Step 6: Final answer
    x = 12,615.41

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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.