Home / 28,721.40-43,082.17-8,731.08

Finding the Fourth Proportional to 28,721.40, 43,082.17 and 8,731.08

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Solution

The fourth proportional to 28,721.40, 43,082.17 and 8,731.08 is: 13,096.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.40 : 43,082.17 = 8,731.08 : x
  2. Step 2: Convert to fraction form
    28,721.40/43,082.17 = 8,731.08/x
  3. Step 3: Cross multiply
    28,721.40x = 43,082.17 × 8,731.08
  4. Step 4: Simplify right side
    28,721.40x = 376,153,872.84
  5. Step 5: Solve for x
    x = 376,153,872.84/28,721.40
  6. Step 6: Final answer
    x = 13,096.64

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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.