Home / 21,118.68-31,667.04-9,872.04

Finding the Fourth Proportional to 21,118.68, 31,667.04 and 9,872.04

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Solution

The fourth proportional to 21,118.68, 31,667.04 and 9,872.04 is: 14,802.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.68 : 31,667.04 = 9,872.04 : x
  2. Step 2: Convert to fraction form
    21,118.68/31,667.04 = 9,872.04/x
  3. Step 3: Cross multiply
    21,118.68x = 31,667.04 × 9,872.04
  4. Step 4: Simplify right side
    21,118.68x = 312,618,285.56
  5. Step 5: Solve for x
    x = 312,618,285.56/21,118.68
  6. Step 6: Final answer
    x = 14,802.93

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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.