Home / 11,869.84-17,807.18-3,971.40

Finding the Fourth Proportional to 11,869.84, 17,807.18 and 3,971.40

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Solution

The fourth proportional to 11,869.84, 17,807.18 and 3,971.40 is: 5,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.84 : 17,807.18 = 3,971.40 : x
  2. Step 2: Convert to fraction form
    11,869.84/17,807.18 = 3,971.40/x
  3. Step 3: Cross multiply
    11,869.84x = 17,807.18 × 3,971.40
  4. Step 4: Simplify right side
    11,869.84x = 70,719,434.65
  5. Step 5: Solve for x
    x = 70,719,434.65/11,869.84
  6. Step 6: Final answer
    x = 5,957.91

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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.