Home / 13,659.80-20,478.24-4,293.92

Finding the Fourth Proportional to 13,659.80, 20,478.24 and 4,293.92

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Solution

The fourth proportional to 13,659.80, 20,478.24 and 4,293.92 is: 6,437.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.80 : 20,478.24 = 4,293.92 : x
  2. Step 2: Convert to fraction form
    13,659.80/20,478.24 = 4,293.92/x
  3. Step 3: Cross multiply
    13,659.80x = 20,478.24 × 4,293.92
  4. Step 4: Simplify right side
    13,659.80x = 87,931,924.30
  5. Step 5: Solve for x
    x = 87,931,924.30/13,659.80
  6. Step 6: Final answer
    x = 6,437.28

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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.