Home / 15,743.31-21,725.91-8,669.76

Finding the Fourth Proportional to 15,743.31, 21,725.91 and 8,669.76

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Solution

The fourth proportional to 15,743.31, 21,725.91 and 8,669.76 is: 11,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.31 : 21,725.91 = 8,669.76 : x
  2. Step 2: Convert to fraction form
    15,743.31/21,725.91 = 8,669.76/x
  3. Step 3: Cross multiply
    15,743.31x = 21,725.91 × 8,669.76
  4. Step 4: Simplify right side
    15,743.31x = 188,358,425.48
  5. Step 5: Solve for x
    x = 188,358,425.48/15,743.31
  6. Step 6: Final answer
    x = 11,964.35

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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.