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Finding the Fourth Proportional to 12,376.99, 17,076.58 and 7,071.49

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Solution

The fourth proportional to 12,376.99, 17,076.58 and 7,071.49 is: 9,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,376.99 : 17,076.58 = 7,071.49 : x
  2. Step 2: Convert to fraction form
    12,376.99/17,076.58 = 7,071.49/x
  3. Step 3: Cross multiply
    12,376.99x = 17,076.58 × 7,071.49
  4. Step 4: Simplify right side
    12,376.99x = 120,756,864.70
  5. Step 5: Solve for x
    x = 120,756,864.70/12,376.99
  6. Step 6: Final answer
    x = 9,756.56

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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.