Home / 28,083.18-42,123.97-11,439.10

Finding the Fourth Proportional to 28,083.18, 42,123.97 and 11,439.10

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Solution

The fourth proportional to 28,083.18, 42,123.97 and 11,439.10 is: 17,158.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.18 : 42,123.97 = 11,439.10 : x
  2. Step 2: Convert to fraction form
    28,083.18/42,123.97 = 11,439.10/x
  3. Step 3: Cross multiply
    28,083.18x = 42,123.97 × 11,439.10
  4. Step 4: Simplify right side
    28,083.18x = 481,860,305.23
  5. Step 5: Solve for x
    x = 481,860,305.23/28,083.18
  6. Step 6: Final answer
    x = 17,158.32

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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.