Home / 21,137.28-31,703.36-5,556.12

Finding the Fourth Proportional to 21,137.28, 31,703.36 and 5,556.12

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Solution

The fourth proportional to 21,137.28, 31,703.36 and 5,556.12 is: 8,333.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.28 : 31,703.36 = 5,556.12 : x
  2. Step 2: Convert to fraction form
    21,137.28/31,703.36 = 5,556.12/x
  3. Step 3: Cross multiply
    21,137.28x = 31,703.36 × 5,556.12
  4. Step 4: Simplify right side
    21,137.28x = 176,147,672.56
  5. Step 5: Solve for x
    x = 176,147,672.56/21,137.28
  6. Step 6: Final answer
    x = 8,333.51

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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.