Home / 11,990.61-17,988.18-5,746.38

Finding the Fourth Proportional to 11,990.61, 17,988.18 and 5,746.38

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Solution

The fourth proportional to 11,990.61, 17,988.18 and 5,746.38 is: 8,620.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.61 : 17,988.18 = 5,746.38 : x
  2. Step 2: Convert to fraction form
    11,990.61/17,988.18 = 5,746.38/x
  3. Step 3: Cross multiply
    11,990.61x = 17,988.18 × 5,746.38
  4. Step 4: Simplify right side
    11,990.61x = 103,366,917.79
  5. Step 5: Solve for x
    x = 103,366,917.79/11,990.61
  6. Step 6: Final answer
    x = 8,620.66

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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.