Home / 13,339.96-20,009.40-3,479.32

Finding the Fourth Proportional to 13,339.96, 20,009.40 and 3,479.32

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Solution

The fourth proportional to 13,339.96, 20,009.40 and 3,479.32 is: 5,218.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.96 : 20,009.40 = 3,479.32 : x
  2. Step 2: Convert to fraction form
    13,339.96/20,009.40 = 3,479.32/x
  3. Step 3: Cross multiply
    13,339.96x = 20,009.40 × 3,479.32
  4. Step 4: Simplify right side
    13,339.96x = 69,619,105.61
  5. Step 5: Solve for x
    x = 69,619,105.61/13,339.96
  6. Step 6: Final answer
    x = 5,218.84

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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.