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Finding the Fourth Proportional to 11,318.51, 16,959.81 and 7,607.09

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Solution

The fourth proportional to 11,318.51, 16,959.81 and 7,607.09 is: 11,398.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.51 : 16,959.81 = 7,607.09 : x
  2. Step 2: Convert to fraction form
    11,318.51/16,959.81 = 7,607.09/x
  3. Step 3: Cross multiply
    11,318.51x = 16,959.81 × 7,607.09
  4. Step 4: Simplify right side
    11,318.51x = 129,014,801.05
  5. Step 5: Solve for x
    x = 129,014,801.05/11,318.51
  6. Step 6: Final answer
    x = 11,398.57

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1.5x scale

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.