Home / 13,339.90-20,009.13-6,765.92

Finding the Fourth Proportional to 13,339.90, 20,009.13 and 6,765.92

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Solution

The fourth proportional to 13,339.90, 20,009.13 and 6,765.92 is: 10,148.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.90 : 20,009.13 = 6,765.92 : x
  2. Step 2: Convert to fraction form
    13,339.90/20,009.13 = 6,765.92/x
  3. Step 3: Cross multiply
    13,339.90x = 20,009.13 × 6,765.92
  4. Step 4: Simplify right side
    13,339.90x = 135,380,060.12
  5. Step 5: Solve for x
    x = 135,380,060.12/13,339.90
  6. Step 6: Final answer
    x = 10,148.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.