Home / 28,079.82-42,132.90-12,282.84

Finding the Fourth Proportional to 28,079.82, 42,132.90 and 12,282.84

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Solution

The fourth proportional to 28,079.82, 42,132.90 and 12,282.84 is: 18,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.82 : 42,132.90 = 12,282.84 : x
  2. Step 2: Convert to fraction form
    28,079.82/42,132.90 = 12,282.84/x
  3. Step 3: Cross multiply
    28,079.82x = 42,132.90 × 12,282.84
  4. Step 4: Simplify right side
    28,079.82x = 517,511,669.44
  5. Step 5: Solve for x
    x = 517,511,669.44/28,079.82
  6. Step 6: Final answer
    x = 18,430.02

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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.