Home / 13,154.82-18,153.59-7,186.83

Finding the Fourth Proportional to 13,154.82, 18,153.59 and 7,186.83

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Solution

The fourth proportional to 13,154.82, 18,153.59 and 7,186.83 is: 9,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.82 : 18,153.59 = 7,186.83 : x
  2. Step 2: Convert to fraction form
    13,154.82/18,153.59 = 7,186.83/x
  3. Step 3: Cross multiply
    13,154.82x = 18,153.59 × 7,186.83
  4. Step 4: Simplify right side
    13,154.82x = 130,466,729.29
  5. Step 5: Solve for x
    x = 130,466,729.29/13,154.82
  6. Step 6: Final answer
    x = 9,917.79

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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.