Home / 28,285.22-42,425.40-8,568.20

Finding the Fourth Proportional to 28,285.22, 42,425.40 and 8,568.20

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Solution

The fourth proportional to 28,285.22, 42,425.40 and 8,568.20 is: 12,851.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,285.22 : 42,425.40 = 8,568.20 : x
  2. Step 2: Convert to fraction form
    28,285.22/42,425.40 = 8,568.20/x
  3. Step 3: Cross multiply
    28,285.22x = 42,425.40 × 8,568.20
  4. Step 4: Simplify right side
    28,285.22x = 363,509,312.28
  5. Step 5: Solve for x
    x = 363,509,312.28/28,285.22
  6. Step 6: Final answer
    x = 12,851.56

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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.