Home / 13,118.96-18,104.05-7,150.63

Finding the Fourth Proportional to 13,118.96, 18,104.05 and 7,150.63

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Solution

The fourth proportional to 13,118.96, 18,104.05 and 7,150.63 is: 9,867.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.96 : 18,104.05 = 7,150.63 : x
  2. Step 2: Convert to fraction form
    13,118.96/18,104.05 = 7,150.63/x
  3. Step 3: Cross multiply
    13,118.96x = 18,104.05 × 7,150.63
  4. Step 4: Simplify right side
    13,118.96x = 129,455,363.05
  5. Step 5: Solve for x
    x = 129,455,363.05/13,118.96
  6. Step 6: Final answer
    x = 9,867.81

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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.