Home / 11,922.04-17,876.13-7,977.81

Finding the Fourth Proportional to 11,922.04, 17,876.13 and 7,977.81

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Solution

The fourth proportional to 11,922.04, 17,876.13 and 7,977.81 is: 11,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.04 : 17,876.13 = 7,977.81 : x
  2. Step 2: Convert to fraction form
    11,922.04/17,876.13 = 7,977.81/x
  3. Step 3: Cross multiply
    11,922.04x = 17,876.13 × 7,977.81
  4. Step 4: Simplify right side
    11,922.04x = 142,612,368.68
  5. Step 5: Solve for x
    x = 142,612,368.68/11,922.04
  6. Step 6: Final answer
    x = 11,962.08

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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.