Home / 15,965.29-21,872.55-15,366.72

Finding the Fourth Proportional to 15,965.29, 21,872.55 and 15,366.72

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Solution

The fourth proportional to 15,965.29, 21,872.55 and 15,366.72 is: 21,052.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,965.29 : 21,872.55 = 15,366.72 : x
  2. Step 2: Convert to fraction form
    15,965.29/21,872.55 = 15,366.72/x
  3. Step 3: Cross multiply
    15,965.29x = 21,872.55 × 15,366.72
  4. Step 4: Simplify right side
    15,965.29x = 336,109,351.54
  5. Step 5: Solve for x
    x = 336,109,351.54/15,965.29
  6. Step 6: Final answer
    x = 21,052.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.