Home / 13,228.38-18,255.76-7,922.16

Finding the Fourth Proportional to 13,228.38, 18,255.76 and 7,922.16

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Solution

The fourth proportional to 13,228.38, 18,255.76 and 7,922.16 is: 10,932.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.38 : 18,255.76 = 7,922.16 : x
  2. Step 2: Convert to fraction form
    13,228.38/18,255.76 = 7,922.16/x
  3. Step 3: Cross multiply
    13,228.38x = 18,255.76 × 7,922.16
  4. Step 4: Simplify right side
    13,228.38x = 144,625,051.64
  5. Step 5: Solve for x
    x = 144,625,051.64/13,228.38
  6. Step 6: Final answer
    x = 10,932.94

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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.