Home / 13,600.64-20,379.04-8,395.52

Finding the Fourth Proportional to 13,600.64, 20,379.04 and 8,395.52

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Solution

The fourth proportional to 13,600.64, 20,379.04 and 8,395.52 is: 12,579.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.64 : 20,379.04 = 8,395.52 : x
  2. Step 2: Convert to fraction form
    13,600.64/20,379.04 = 8,395.52/x
  3. Step 3: Cross multiply
    13,600.64x = 20,379.04 × 8,395.52
  4. Step 4: Simplify right side
    13,600.64x = 171,092,637.90
  5. Step 5: Solve for x
    x = 171,092,637.90/13,600.64
  6. Step 6: Final answer
    x = 12,579.75

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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.