Home / 13,339.60-20,009.40-3,478.87

Finding the Fourth Proportional to 13,339.60, 20,009.40 and 3,478.87

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Solution

The fourth proportional to 13,339.60, 20,009.40 and 3,478.87 is: 5,218.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.60 : 20,009.40 = 3,478.87 : x
  2. Step 2: Convert to fraction form
    13,339.60/20,009.40 = 3,478.87/x
  3. Step 3: Cross multiply
    13,339.60x = 20,009.40 × 3,478.87
  4. Step 4: Simplify right side
    13,339.60x = 69,610,101.38
  5. Step 5: Solve for x
    x = 69,610,101.38/13,339.60
  6. Step 6: Final answer
    x = 5,218.31

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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.