Home / 13,720.24-18,933.94-7,432.64

Finding the Fourth Proportional to 13,720.24, 18,933.94 and 7,432.64

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Solution

The fourth proportional to 13,720.24, 18,933.94 and 7,432.64 is: 10,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.24 : 18,933.94 = 7,432.64 : x
  2. Step 2: Convert to fraction form
    13,720.24/18,933.94 = 7,432.64/x
  3. Step 3: Cross multiply
    13,720.24x = 18,933.94 × 7,432.64
  4. Step 4: Simplify right side
    13,720.24x = 140,729,159.80
  5. Step 5: Solve for x
    x = 140,729,159.80/13,720.24
  6. Step 6: Final answer
    x = 10,257.05

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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.