Home / 15,836.92-21,857.27-9,121.25

Finding the Fourth Proportional to 15,836.92, 21,857.27 and 9,121.25

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Solution

The fourth proportional to 15,836.92, 21,857.27 and 9,121.25 is: 12,588.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,836.92 : 21,857.27 = 9,121.25 : x
  2. Step 2: Convert to fraction form
    15,836.92/21,857.27 = 9,121.25/x
  3. Step 3: Cross multiply
    15,836.92x = 21,857.27 × 9,121.25
  4. Step 4: Simplify right side
    15,836.92x = 199,365,633.02
  5. Step 5: Solve for x
    x = 199,365,633.02/15,836.92
  6. Step 6: Final answer
    x = 12,588.66

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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.