Home / 21,325.68-31,987.60-7,286.96

Finding the Fourth Proportional to 21,325.68, 31,987.60 and 7,286.96

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Solution

The fourth proportional to 21,325.68, 31,987.60 and 7,286.96 is: 10,930.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.68 : 31,987.60 = 7,286.96 : x
  2. Step 2: Convert to fraction form
    21,325.68/31,987.60 = 7,286.96/x
  3. Step 3: Cross multiply
    21,325.68x = 31,987.60 × 7,286.96
  4. Step 4: Simplify right side
    21,325.68x = 233,092,361.70
  5. Step 5: Solve for x
    x = 233,092,361.70/21,325.68
  6. Step 6: Final answer
    x = 10,930.13

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1.5x scale

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.