Home / 21,031.68-31,553.19-6,993.99

Finding the Fourth Proportional to 21,031.68, 31,553.19 and 6,993.99

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Solution

The fourth proportional to 21,031.68, 31,553.19 and 6,993.99 is: 10,492.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.68 : 31,553.19 = 6,993.99 : x
  2. Step 2: Convert to fraction form
    21,031.68/31,553.19 = 6,993.99/x
  3. Step 3: Cross multiply
    21,031.68x = 31,553.19 × 6,993.99
  4. Step 4: Simplify right side
    21,031.68x = 220,682,695.33
  5. Step 5: Solve for x
    x = 220,682,695.33/21,031.68
  6. Step 6: Final answer
    x = 10,492.87

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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.