Home / 11,819.94-17,730-3,386.46

Finding the Fourth Proportional to 11,819.94, 17,730 and 3,386.46

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Solution

The fourth proportional to 11,819.94, 17,730 and 3,386.46 is: 5,079.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.94 : 17,730 = 3,386.46 : x
  2. Step 2: Convert to fraction form
    11,819.94/17,730 = 3,386.46/x
  3. Step 3: Cross multiply
    11,819.94x = 17,730 × 3,386.46
  4. Step 4: Simplify right side
    11,819.94x = 60,041,935.80
  5. Step 5: Solve for x
    x = 60,041,935.80/11,819.94
  6. Step 6: Final answer
    x = 5,079.72

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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.