Home / 13,720.12-18,933.60-7,432.44

Finding the Fourth Proportional to 13,720.12, 18,933.60 and 7,432.44

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Solution

The fourth proportional to 13,720.12, 18,933.60 and 7,432.44 is: 10,256.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.12 : 18,933.60 = 7,432.44 : x
  2. Step 2: Convert to fraction form
    13,720.12/18,933.60 = 7,432.44/x
  3. Step 3: Cross multiply
    13,720.12x = 18,933.60 × 7,432.44
  4. Step 4: Simplify right side
    13,720.12x = 140,722,845.98
  5. Step 5: Solve for x
    x = 140,722,845.98/13,720.12
  6. Step 6: Final answer
    x = 10,256.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.