Home / 15,343.52-21,166.91-9,965.58

Finding the Fourth Proportional to 15,343.52, 21,166.91 and 9,965.58

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Solution

The fourth proportional to 15,343.52, 21,166.91 and 9,965.58 is: 13,747.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,343.52 : 21,166.91 = 9,965.58 : x
  2. Step 2: Convert to fraction form
    15,343.52/21,166.91 = 9,965.58/x
  3. Step 3: Cross multiply
    15,343.52x = 21,166.91 × 9,965.58
  4. Step 4: Simplify right side
    15,343.52x = 210,940,578.56
  5. Step 5: Solve for x
    x = 210,940,578.56/15,343.52
  6. Step 6: Final answer
    x = 13,747.86

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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.