Home / 13,331.72-18,399.49-8,301.02

Finding the Fourth Proportional to 13,331.72, 18,399.49 and 8,301.02

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Solution

The fourth proportional to 13,331.72, 18,399.49 and 8,301.02 is: 11,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.72 : 18,399.49 = 8,301.02 : x
  2. Step 2: Convert to fraction form
    13,331.72/18,399.49 = 8,301.02/x
  3. Step 3: Cross multiply
    13,331.72x = 18,399.49 × 8,301.02
  4. Step 4: Simplify right side
    13,331.72x = 152,734,421.73
  5. Step 5: Solve for x
    x = 152,734,421.73/13,331.72
  6. Step 6: Final answer
    x = 11,456.47

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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.