Home / 13,427.92-18,531.05-9,187.87

Finding the Fourth Proportional to 13,427.92, 18,531.05 and 9,187.87

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Solution

The fourth proportional to 13,427.92, 18,531.05 and 9,187.87 is: 12,679.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.92 : 18,531.05 = 9,187.87 : x
  2. Step 2: Convert to fraction form
    13,427.92/18,531.05 = 9,187.87/x
  3. Step 3: Cross multiply
    13,427.92x = 18,531.05 × 9,187.87
  4. Step 4: Simplify right side
    13,427.92x = 170,260,739.77
  5. Step 5: Solve for x
    x = 170,260,739.77/13,427.92
  6. Step 6: Final answer
    x = 12,679.61

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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.