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Finding the Fourth Proportional to 13,040.99, 18,008.28 and 8,333.48

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Solution

The fourth proportional to 13,040.99, 18,008.28 and 8,333.48 is: 11,507.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,040.99 : 18,008.28 = 8,333.48 : x
  2. Step 2: Convert to fraction form
    13,040.99/18,008.28 = 8,333.48/x
  3. Step 3: Cross multiply
    13,040.99x = 18,008.28 × 8,333.48
  4. Step 4: Simplify right side
    13,040.99x = 150,071,551.17
  5. Step 5: Solve for x
    x = 150,071,551.17/13,040.99
  6. Step 6: Final answer
    x = 11,507.69

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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.