Home / 13,081.25-18,057.36-8,047.49

Finding the Fourth Proportional to 13,081.25, 18,057.36 and 8,047.49

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Solution

The fourth proportional to 13,081.25, 18,057.36 and 8,047.49 is: 11,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.25 : 18,057.36 = 8,047.49 : x
  2. Step 2: Convert to fraction form
    13,081.25/18,057.36 = 8,047.49/x
  3. Step 3: Cross multiply
    13,081.25x = 18,057.36 × 8,047.49
  4. Step 4: Simplify right side
    13,081.25x = 145,316,424.03
  5. Step 5: Solve for x
    x = 145,316,424.03/13,081.25
  6. Step 6: Final answer
    x = 11,108.76

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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.