Home / 18,005.57-24,840.75-11,279.48

Finding the Fourth Proportional to 18,005.57, 24,840.75 and 11,279.48

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Solution

The fourth proportional to 18,005.57, 24,840.75 and 11,279.48 is: 15,561.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.57 : 24,840.75 = 11,279.48 : x
  2. Step 2: Convert to fraction form
    18,005.57/24,840.75 = 11,279.48/x
  3. Step 3: Cross multiply
    18,005.57x = 24,840.75 × 11,279.48
  4. Step 4: Simplify right side
    18,005.57x = 280,190,742.81
  5. Step 5: Solve for x
    x = 280,190,742.81/18,005.57
  6. Step 6: Final answer
    x = 15,561.34

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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.