Home / 28,123.07-42,198.57-11,487.29

Finding the Fourth Proportional to 28,123.07, 42,198.57 and 11,487.29

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Solution

The fourth proportional to 28,123.07, 42,198.57 and 11,487.29 is: 17,236.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.07 : 42,198.57 = 11,487.29 : x
  2. Step 2: Convert to fraction form
    28,123.07/42,198.57 = 11,487.29/x
  3. Step 3: Cross multiply
    28,123.07x = 42,198.57 × 11,487.29
  4. Step 4: Simplify right side
    28,123.07x = 484,747,000.18
  5. Step 5: Solve for x
    x = 484,747,000.18/28,123.07
  6. Step 6: Final answer
    x = 17,236.63

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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.