Home / 22,051.85-30,431.70-11,980.31

Finding the Fourth Proportional to 22,051.85, 30,431.70 and 11,980.31

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Solution

The fourth proportional to 22,051.85, 30,431.70 and 11,980.31 is: 16,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,051.85 : 30,431.70 = 11,980.31 : x
  2. Step 2: Convert to fraction form
    22,051.85/30,431.70 = 11,980.31/x
  3. Step 3: Cross multiply
    22,051.85x = 30,431.70 × 11,980.31
  4. Step 4: Simplify right side
    22,051.85x = 364,581,047.67
  5. Step 5: Solve for x
    x = 364,581,047.67/22,051.85
  6. Step 6: Final answer
    x = 16,532.90

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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.