Home / 11,979.06-17,972.16-8,654.82

Finding the Fourth Proportional to 11,979.06, 17,972.16 and 8,654.82

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Solution

The fourth proportional to 11,979.06, 17,972.16 and 8,654.82 is: 12,984.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.06 : 17,972.16 = 8,654.82 : x
  2. Step 2: Convert to fraction form
    11,979.06/17,972.16 = 8,654.82/x
  3. Step 3: Cross multiply
    11,979.06x = 17,972.16 × 8,654.82
  4. Step 4: Simplify right side
    11,979.06x = 155,545,809.81
  5. Step 5: Solve for x
    x = 155,545,809.81/11,979.06
  6. Step 6: Final answer
    x = 12,984.81

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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.