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Finding the Fourth Proportional to 12,661.11, 17,468.06 and 7,351.56

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Solution

The fourth proportional to 12,661.11, 17,468.06 and 7,351.56 is: 10,142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.11 : 17,468.06 = 7,351.56 : x
  2. Step 2: Convert to fraction form
    12,661.11/17,468.06 = 7,351.56/x
  3. Step 3: Cross multiply
    12,661.11x = 17,468.06 × 7,351.56
  4. Step 4: Simplify right side
    12,661.11x = 128,417,454.42
  5. Step 5: Solve for x
    x = 128,417,454.42/12,661.11
  6. Step 6: Final answer
    x = 10,142.67

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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.