Home / 21,318.80-31,975.66-6,537.92

Finding the Fourth Proportional to 21,318.80, 31,975.66 and 6,537.92

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Solution

The fourth proportional to 21,318.80, 31,975.66 and 6,537.92 is: 9,806.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.80 : 31,975.66 = 6,537.92 : x
  2. Step 2: Convert to fraction form
    21,318.80/31,975.66 = 6,537.92/x
  3. Step 3: Cross multiply
    21,318.80x = 31,975.66 × 6,537.92
  4. Step 4: Simplify right side
    21,318.80x = 209,054,307.03
  5. Step 5: Solve for x
    x = 209,054,307.03/21,318.80
  6. Step 6: Final answer
    x = 9,806.10

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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.