Home / 20,280.41-27,984.19-11,326.77

Finding the Fourth Proportional to 20,280.41, 27,984.19 and 11,326.77

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Solution

The fourth proportional to 20,280.41, 27,984.19 and 11,326.77 is: 15,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.41 : 27,984.19 = 11,326.77 : x
  2. Step 2: Convert to fraction form
    20,280.41/27,984.19 = 11,326.77/x
  3. Step 3: Cross multiply
    20,280.41x = 27,984.19 × 11,326.77
  4. Step 4: Simplify right side
    20,280.41x = 316,970,483.77
  5. Step 5: Solve for x
    x = 316,970,483.77/20,280.41
  6. Step 6: Final answer
    x = 15,629.39

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Half scale
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Double scale
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Similar ratio
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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.