Home / 15,743.25-21,725.69-8,669.66

Finding the Fourth Proportional to 15,743.25, 21,725.69 and 8,669.66

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Solution

The fourth proportional to 15,743.25, 21,725.69 and 8,669.66 is: 11,964.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.25 : 21,725.69 = 8,669.66 : x
  2. Step 2: Convert to fraction form
    15,743.25/21,725.69 = 8,669.66/x
  3. Step 3: Cross multiply
    15,743.25x = 21,725.69 × 8,669.66
  4. Step 4: Simplify right side
    15,743.25x = 188,354,193.59
  5. Step 5: Solve for x
    x = 188,354,193.59/15,743.25
  6. Step 6: Final answer
    x = 11,964.12

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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.