Home / 18,278.36-25,224.12-9,894.86

Finding the Fourth Proportional to 18,278.36, 25,224.12 and 9,894.86

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Solution

The fourth proportional to 18,278.36, 25,224.12 and 9,894.86 is: 13,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.36 : 25,224.12 = 9,894.86 : x
  2. Step 2: Convert to fraction form
    18,278.36/25,224.12 = 9,894.86/x
  3. Step 3: Cross multiply
    18,278.36x = 25,224.12 × 9,894.86
  4. Step 4: Simplify right side
    18,278.36x = 249,589,136.02
  5. Step 5: Solve for x
    x = 249,589,136.02/18,278.36
  6. Step 6: Final answer
    x = 13,654.90

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Half scale
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Double scale
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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.