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Finding the Fourth Proportional to 13,253.13, 18,288.99 and 7,203.11

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Solution

The fourth proportional to 13,253.13, 18,288.99 and 7,203.11 is: 9,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.13 : 18,288.99 = 7,203.11 : x
  2. Step 2: Convert to fraction form
    13,253.13/18,288.99 = 7,203.11/x
  3. Step 3: Cross multiply
    13,253.13x = 18,288.99 × 7,203.11
  4. Step 4: Simplify right side
    13,253.13x = 131,737,515.31
  5. Step 5: Solve for x
    x = 131,737,515.31/13,253.13
  6. Step 6: Final answer
    x = 9,940.11

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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.