Home / 13,720.24-18,933.90-7,432.60

Finding the Fourth Proportional to 13,720.24, 18,933.90 and 7,432.60

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Solution

The fourth proportional to 13,720.24, 18,933.90 and 7,432.60 is: 10,256.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.24 : 18,933.90 = 7,432.60 : x
  2. Step 2: Convert to fraction form
    13,720.24/18,933.90 = 7,432.60/x
  3. Step 3: Cross multiply
    13,720.24x = 18,933.90 × 7,432.60
  4. Step 4: Simplify right side
    13,720.24x = 140,728,105.14
  5. Step 5: Solve for x
    x = 140,728,105.14/13,720.24
  6. Step 6: Final answer
    x = 10,256.97

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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.