Home / 15,777.27-21,768.75-10,399.11

Finding the Fourth Proportional to 15,777.27, 21,768.75 and 10,399.11

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Solution

The fourth proportional to 15,777.27, 21,768.75 and 10,399.11 is: 14,348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.27 : 21,768.75 = 10,399.11 : x
  2. Step 2: Convert to fraction form
    15,777.27/21,768.75 = 10,399.11/x
  3. Step 3: Cross multiply
    15,777.27x = 21,768.75 × 10,399.11
  4. Step 4: Simplify right side
    15,777.27x = 226,375,625.81
  5. Step 5: Solve for x
    x = 226,375,625.81/15,777.27
  6. Step 6: Final answer
    x = 14,348.21

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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.