Home / 20,437.96-28,205.68-11,364.34

Finding the Fourth Proportional to 20,437.96, 28,205.68 and 11,364.34

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Solution

The fourth proportional to 20,437.96, 28,205.68 and 11,364.34 is: 15,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.96 : 28,205.68 = 11,364.34 : x
  2. Step 2: Convert to fraction form
    20,437.96/28,205.68 = 11,364.34/x
  3. Step 3: Cross multiply
    20,437.96x = 28,205.68 × 11,364.34
  4. Step 4: Simplify right side
    20,437.96x = 320,538,937.45
  5. Step 5: Solve for x
    x = 320,538,937.45/20,437.96
  6. Step 6: Final answer
    x = 15,683.51

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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.