Home / 28,287.18-42,432.83-8,567.28

Finding the Fourth Proportional to 28,287.18, 42,432.83 and 8,567.28

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Solution

The fourth proportional to 28,287.18, 42,432.83 and 8,567.28 is: 12,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287.18 : 42,432.83 = 8,567.28 : x
  2. Step 2: Convert to fraction form
    28,287.18/42,432.83 = 8,567.28/x
  3. Step 3: Cross multiply
    28,287.18x = 42,432.83 × 8,567.28
  4. Step 4: Simplify right side
    28,287.18x = 363,533,892.97
  5. Step 5: Solve for x
    x = 363,533,892.97/28,287.18
  6. Step 6: Final answer
    x = 12,851.54

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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.