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Finding the Fourth Proportional to 12,881.52, 17,776.15 and 7,576.66

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Solution

The fourth proportional to 12,881.52, 17,776.15 and 7,576.66 is: 10,455.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.52 : 17,776.15 = 7,576.66 : x
  2. Step 2: Convert to fraction form
    12,881.52/17,776.15 = 7,576.66/x
  3. Step 3: Cross multiply
    12,881.52x = 17,776.15 × 7,576.66
  4. Step 4: Simplify right side
    12,881.52x = 134,683,844.66
  5. Step 5: Solve for x
    x = 134,683,844.66/12,881.52
  6. Step 6: Final answer
    x = 10,455.59

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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.