Home / 28,149.10-42,221.22-8,432.08

Finding the Fourth Proportional to 28,149.10, 42,221.22 and 8,432.08

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Solution

The fourth proportional to 28,149.10, 42,221.22 and 8,432.08 is: 12,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.10 : 42,221.22 = 8,432.08 : x
  2. Step 2: Convert to fraction form
    28,149.10/42,221.22 = 8,432.08/x
  3. Step 3: Cross multiply
    28,149.10x = 42,221.22 × 8,432.08
  4. Step 4: Simplify right side
    28,149.10x = 356,012,704.74
  5. Step 5: Solve for x
    x = 356,012,704.74/28,149.10
  6. Step 6: Final answer
    x = 12,647.39

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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.