Home / 20,926.38-28,878.26-11,366.16

Finding the Fourth Proportional to 20,926.38, 28,878.26 and 11,366.16

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Solution

The fourth proportional to 20,926.38, 28,878.26 and 11,366.16 is: 15,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.38 : 28,878.26 = 11,366.16 : x
  2. Step 2: Convert to fraction form
    20,926.38/28,878.26 = 11,366.16/x
  3. Step 3: Cross multiply
    20,926.38x = 28,878.26 × 11,366.16
  4. Step 4: Simplify right side
    20,926.38x = 328,234,923.68
  5. Step 5: Solve for x
    x = 328,234,923.68/20,926.38
  6. Step 6: Final answer
    x = 15,685.22

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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.