Home / 13,932.48-20,863.04-7,685.55

Finding the Fourth Proportional to 13,932.48, 20,863.04 and 7,685.55

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Solution

The fourth proportional to 13,932.48, 20,863.04 and 7,685.55 is: 11,508.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932.48 : 20,863.04 = 7,685.55 : x
  2. Step 2: Convert to fraction form
    13,932.48/20,863.04 = 7,685.55/x
  3. Step 3: Cross multiply
    13,932.48x = 20,863.04 × 7,685.55
  4. Step 4: Simplify right side
    13,932.48x = 160,343,941.88
  5. Step 5: Solve for x
    x = 160,343,941.88/13,932.48
  6. Step 6: Final answer
    x = 11,508.64

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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.