Home / 13,659.76-20,490.08-5,339.44

Finding the Fourth Proportional to 13,659.76, 20,490.08 and 5,339.44

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Solution

The fourth proportional to 13,659.76, 20,490.08 and 5,339.44 is: 8,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.76 : 20,490.08 = 5,339.44 : x
  2. Step 2: Convert to fraction form
    13,659.76/20,490.08 = 5,339.44/x
  3. Step 3: Cross multiply
    13,659.76x = 20,490.08 × 5,339.44
  4. Step 4: Simplify right side
    13,659.76x = 109,405,552.76
  5. Step 5: Solve for x
    x = 109,405,552.76/13,659.76
  6. Step 6: Final answer
    x = 8,009.33

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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.