Home / 28,320.90-42,481.55-8,599.69

Finding the Fourth Proportional to 28,320.90, 42,481.55 and 8,599.69

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Solution

The fourth proportional to 28,320.90, 42,481.55 and 8,599.69 is: 12,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.90 : 42,481.55 = 8,599.69 : x
  2. Step 2: Convert to fraction form
    28,320.90/42,481.55 = 8,599.69/x
  3. Step 3: Cross multiply
    28,320.90x = 42,481.55 × 8,599.69
  4. Step 4: Simplify right side
    28,320.90x = 365,328,160.72
  5. Step 5: Solve for x
    x = 365,328,160.72/28,320.90
  6. Step 6: Final answer
    x = 12,899.60

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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.