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Finding the Fourth Proportional to 11,616.31, 16,033.04 and 7,143.90

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Solution

The fourth proportional to 11,616.31, 16,033.04 and 7,143.90 is: 9,860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,616.31 : 16,033.04 = 7,143.90 : x
  2. Step 2: Convert to fraction form
    11,616.31/16,033.04 = 7,143.90/x
  3. Step 3: Cross multiply
    11,616.31x = 16,033.04 × 7,143.90
  4. Step 4: Simplify right side
    11,616.31x = 114,538,434.46
  5. Step 5: Solve for x
    x = 114,538,434.46/11,616.31
  6. Step 6: Final answer
    x = 9,860.14

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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.