Home / 15,742.69-21,724.92-8,669.11

Finding the Fourth Proportional to 15,742.69, 21,724.92 and 8,669.11

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Solution

The fourth proportional to 15,742.69, 21,724.92 and 8,669.11 is: 11,963.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.69 : 21,724.92 = 8,669.11 : x
  2. Step 2: Convert to fraction form
    15,742.69/21,724.92 = 8,669.11/x
  3. Step 3: Cross multiply
    15,742.69x = 21,724.92 × 8,669.11
  4. Step 4: Simplify right side
    15,742.69x = 188,335,721.22
  5. Step 5: Solve for x
    x = 188,335,721.22/15,742.69
  6. Step 6: Final answer
    x = 11,963.38

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1.5x scale

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.