Home / 10,721.97-15,956.39-10,328.31

Finding the Fourth Proportional to 10,721.97, 15,956.39 and 10,328.31

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Solution

The fourth proportional to 10,721.97, 15,956.39 and 10,328.31 is: 15,370.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.97 : 15,956.39 = 10,328.31 : x
  2. Step 2: Convert to fraction form
    10,721.97/15,956.39 = 10,328.31/x
  3. Step 3: Cross multiply
    10,721.97x = 15,956.39 × 10,328.31
  4. Step 4: Simplify right side
    10,721.97x = 164,802,568.22
  5. Step 5: Solve for x
    x = 164,802,568.22/10,721.97
  6. Step 6: Final answer
    x = 15,370.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.