Home / 13,589.47-18,753.53-7,621.70

Finding the Fourth Proportional to 13,589.47, 18,753.53 and 7,621.70

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Solution

The fourth proportional to 13,589.47, 18,753.53 and 7,621.70 is: 10,517.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.47 : 18,753.53 = 7,621.70 : x
  2. Step 2: Convert to fraction form
    13,589.47/18,753.53 = 7,621.70/x
  3. Step 3: Cross multiply
    13,589.47x = 18,753.53 × 7,621.70
  4. Step 4: Simplify right side
    13,589.47x = 142,933,647.72
  5. Step 5: Solve for x
    x = 142,933,647.72/13,589.47
  6. Step 6: Final answer
    x = 10,517.97

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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.