Home / 13,155.36-18,164.16-8,442.24

Finding the Fourth Proportional to 13,155.36, 18,164.16 and 8,442.24

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Solution

The fourth proportional to 13,155.36, 18,164.16 and 8,442.24 is: 11,656.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.36 : 18,164.16 = 8,442.24 : x
  2. Step 2: Convert to fraction form
    13,155.36/18,164.16 = 8,442.24/x
  3. Step 3: Cross multiply
    13,155.36x = 18,164.16 × 8,442.24
  4. Step 4: Simplify right side
    13,155.36x = 153,346,198.12
  5. Step 5: Solve for x
    x = 153,346,198.12/13,155.36
  6. Step 6: Final answer
    x = 11,656.56

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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.