Home / 19,870.11-29,809.62-6,722.19

Finding the Fourth Proportional to 19,870.11, 29,809.62 and 6,722.19

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Solution

The fourth proportional to 19,870.11, 29,809.62 and 6,722.19 is: 10,084.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.11 : 29,809.62 = 6,722.19 : x
  2. Step 2: Convert to fraction form
    19,870.11/29,809.62 = 6,722.19/x
  3. Step 3: Cross multiply
    19,870.11x = 29,809.62 × 6,722.19
  4. Step 4: Simplify right side
    19,870.11x = 200,385,929.47
  5. Step 5: Solve for x
    x = 200,385,929.47/19,870.11
  6. Step 6: Final answer
    x = 10,084.79

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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.