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Finding the Fourth Proportional to 13,233.43, 18,260.77 and 7,928.11

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Solution

The fourth proportional to 13,233.43, 18,260.77 and 7,928.11 is: 10,939.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,233.43 : 18,260.77 = 7,928.11 : x
  2. Step 2: Convert to fraction form
    13,233.43/18,260.77 = 7,928.11/x
  3. Step 3: Cross multiply
    13,233.43x = 18,260.77 × 7,928.11
  4. Step 4: Simplify right side
    13,233.43x = 144,773,393.24
  5. Step 5: Solve for x
    x = 144,773,393.24/13,233.43
  6. Step 6: Final answer
    x = 10,939.97

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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.