Home / 21,069.85-31,601.13-7,922.34

Finding the Fourth Proportional to 21,069.85, 31,601.13 and 7,922.34

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Solution

The fourth proportional to 21,069.85, 31,601.13 and 7,922.34 is: 11,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.85 : 31,601.13 = 7,922.34 : x
  2. Step 2: Convert to fraction form
    21,069.85/31,601.13 = 7,922.34/x
  3. Step 3: Cross multiply
    21,069.85x = 31,601.13 × 7,922.34
  4. Step 4: Simplify right side
    21,069.85x = 250,354,896.24
  5. Step 5: Solve for x
    x = 250,354,896.24/21,069.85
  6. Step 6: Final answer
    x = 11,882.14

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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.