Home / 14,780.62-20,390.73-9,998.86

Finding the Fourth Proportional to 14,780.62, 20,390.73 and 9,998.86

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Solution

The fourth proportional to 14,780.62, 20,390.73 and 9,998.86 is: 13,794.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.62 : 20,390.73 = 9,998.86 : x
  2. Step 2: Convert to fraction form
    14,780.62/20,390.73 = 9,998.86/x
  3. Step 3: Cross multiply
    14,780.62x = 20,390.73 × 9,998.86
  4. Step 4: Simplify right side
    14,780.62x = 203,884,054.57
  5. Step 5: Solve for x
    x = 203,884,054.57/14,780.62
  6. Step 6: Final answer
    x = 13,794.01

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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.