Home / 28,082.64-42,123.89-11,438.76

Finding the Fourth Proportional to 28,082.64, 42,123.89 and 11,438.76

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Solution

The fourth proportional to 28,082.64, 42,123.89 and 11,438.76 is: 17,158.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.64 : 42,123.89 = 11,438.76 : x
  2. Step 2: Convert to fraction form
    28,082.64/42,123.89 = 11,438.76/x
  3. Step 3: Cross multiply
    28,082.64x = 42,123.89 × 11,438.76
  4. Step 4: Simplify right side
    28,082.64x = 481,845,116.09
  5. Step 5: Solve for x
    x = 481,845,116.09/28,082.64
  6. Step 6: Final answer
    x = 17,158.11

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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.