Home / 28,010.20-42,015.30-22,761.40

Finding the Fourth Proportional to 28,010.20, 42,015.30 and 22,761.40

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Solution

The fourth proportional to 28,010.20, 42,015.30 and 22,761.40 is: 34,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.20 : 42,015.30 = 22,761.40 : x
  2. Step 2: Convert to fraction form
    28,010.20/42,015.30 = 22,761.40/x
  3. Step 3: Cross multiply
    28,010.20x = 42,015.30 × 22,761.40
  4. Step 4: Simplify right side
    28,010.20x = 956,327,049.42
  5. Step 5: Solve for x
    x = 956,327,049.42/28,010.20
  6. Step 6: Final answer
    x = 34,142.10

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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.