Home / 20,436.94-28,205.50-11,484.25

Finding the Fourth Proportional to 20,436.94, 28,205.50 and 11,484.25

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Solution

The fourth proportional to 20,436.94, 28,205.50 and 11,484.25 is: 15,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.94 : 28,205.50 = 11,484.25 : x
  2. Step 2: Convert to fraction form
    20,436.94/28,205.50 = 11,484.25/x
  3. Step 3: Cross multiply
    20,436.94x = 28,205.50 × 11,484.25
  4. Step 4: Simplify right side
    20,436.94x = 323,919,013.38
  5. Step 5: Solve for x
    x = 323,919,013.38/20,436.94
  6. Step 6: Final answer
    x = 15,849.68

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Half scale
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Double scale
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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.