Home / 21,438.52-32,162.40-6,647.14

Finding the Fourth Proportional to 21,438.52, 32,162.40 and 6,647.14

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Solution

The fourth proportional to 21,438.52, 32,162.40 and 6,647.14 is: 9,972.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.52 : 32,162.40 = 6,647.14 : x
  2. Step 2: Convert to fraction form
    21,438.52/32,162.40 = 6,647.14/x
  3. Step 3: Cross multiply
    21,438.52x = 32,162.40 × 6,647.14
  4. Step 4: Simplify right side
    21,438.52x = 213,787,975.54
  5. Step 5: Solve for x
    x = 213,787,975.54/21,438.52
  6. Step 6: Final answer
    x = 9,972.14

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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.