Home / 20,758.16-28,646.24-11,326.72

Finding the Fourth Proportional to 20,758.16, 28,646.24 and 11,326.72

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Solution

The fourth proportional to 20,758.16, 28,646.24 and 11,326.72 is: 15,630.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.16 : 28,646.24 = 11,326.72 : x
  2. Step 2: Convert to fraction form
    20,758.16/28,646.24 = 11,326.72/x
  3. Step 3: Cross multiply
    20,758.16x = 28,646.24 × 11,326.72
  4. Step 4: Simplify right side
    20,758.16x = 324,467,939.53
  5. Step 5: Solve for x
    x = 324,467,939.53/20,758.16
  6. Step 6: Final answer
    x = 15,630.86

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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.