Home / 13,358.08-18,440.07-7,982.43

Finding the Fourth Proportional to 13,358.08, 18,440.07 and 7,982.43

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Solution

The fourth proportional to 13,358.08, 18,440.07 and 7,982.43 is: 11,019.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.08 : 18,440.07 = 7,982.43 : x
  2. Step 2: Convert to fraction form
    13,358.08/18,440.07 = 7,982.43/x
  3. Step 3: Cross multiply
    13,358.08x = 18,440.07 × 7,982.43
  4. Step 4: Simplify right side
    13,358.08x = 147,196,567.97
  5. Step 5: Solve for x
    x = 147,196,567.97/13,358.08
  6. Step 6: Final answer
    x = 11,019.29

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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.