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Finding the Fourth Proportional to 13,768.04, 20,631.04 and 10,240.99

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Solution

The fourth proportional to 13,768.04, 20,631.04 and 10,240.99 is: 15,345.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.04 : 20,631.04 = 10,240.99 : x
  2. Step 2: Convert to fraction form
    13,768.04/20,631.04 = 10,240.99/x
  3. Step 3: Cross multiply
    13,768.04x = 20,631.04 × 10,240.99
  4. Step 4: Simplify right side
    13,768.04x = 211,282,274.33
  5. Step 5: Solve for x
    x = 211,282,274.33/13,768.04
  6. Step 6: Final answer
    x = 15,345.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.