Home / 21,358.44-31,974.57-15,774.70

Finding the Fourth Proportional to 21,358.44, 31,974.57 and 15,774.70

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Solution

The fourth proportional to 21,358.44, 31,974.57 and 15,774.70 is: 23,615.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.44 : 31,974.57 = 15,774.70 : x
  2. Step 2: Convert to fraction form
    21,358.44/31,974.57 = 15,774.70/x
  3. Step 3: Cross multiply
    21,358.44x = 31,974.57 × 15,774.70
  4. Step 4: Simplify right side
    21,358.44x = 504,389,249.38
  5. Step 5: Solve for x
    x = 504,389,249.38/21,358.44
  6. Step 6: Final answer
    x = 23,615.45

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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.