Home / 15,288-21,105.12-14,366.40

Finding the Fourth Proportional to 15,288, 21,105.12 and 14,366.40

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Solution

The fourth proportional to 15,288, 21,105.12 and 14,366.40 is: 19,832.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288 : 21,105.12 = 14,366.40 : x
  2. Step 2: Convert to fraction form
    15,288/21,105.12 = 14,366.40/x
  3. Step 3: Cross multiply
    15,288x = 21,105.12 × 14,366.40
  4. Step 4: Simplify right side
    15,288x = 303,204,595.97
  5. Step 5: Solve for x
    x = 303,204,595.97/15,288
  6. Step 6: Final answer
    x = 19,832.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.