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Finding the Fourth Proportional to 11,988, 16,544.67 and 7,209.51

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Solution

The fourth proportional to 11,988, 16,544.67 and 7,209.51 is: 9,949.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988 : 16,544.67 = 7,209.51 : x
  2. Step 2: Convert to fraction form
    11,988/16,544.67 = 7,209.51/x
  3. Step 3: Cross multiply
    11,988x = 16,544.67 × 7,209.51
  4. Step 4: Simplify right side
    11,988x = 119,278,963.81
  5. Step 5: Solve for x
    x = 119,278,963.81/11,988
  6. Step 6: Final answer
    x = 9,949.86

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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.