Home / 13,160.38-18,162.19-7,419.25

Finding the Fourth Proportional to 13,160.38, 18,162.19 and 7,419.25

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Solution

The fourth proportional to 13,160.38, 18,162.19 and 7,419.25 is: 10,239.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.38 : 18,162.19 = 7,419.25 : x
  2. Step 2: Convert to fraction form
    13,160.38/18,162.19 = 7,419.25/x
  3. Step 3: Cross multiply
    13,160.38x = 18,162.19 × 7,419.25
  4. Step 4: Simplify right side
    13,160.38x = 134,749,828.16
  5. Step 5: Solve for x
    x = 134,749,828.16/13,160.38
  6. Step 6: Final answer
    x = 10,239.05

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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.