Home / 22,051.59-30,431.28-11,980.08

Finding the Fourth Proportional to 22,051.59, 30,431.28 and 11,980.08

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Solution

The fourth proportional to 22,051.59, 30,431.28 and 11,980.08 is: 16,532.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,051.59 : 30,431.28 = 11,980.08 : x
  2. Step 2: Convert to fraction form
    22,051.59/30,431.28 = 11,980.08/x
  3. Step 3: Cross multiply
    22,051.59x = 30,431.28 × 11,980.08
  4. Step 4: Simplify right side
    22,051.59x = 364,569,168.90
  5. Step 5: Solve for x
    x = 364,569,168.90/22,051.59
  6. Step 6: Final answer
    x = 16,532.56

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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.