Home / 15,700.21-21,660.14-8,982.24

Finding the Fourth Proportional to 15,700.21, 21,660.14 and 8,982.24

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Solution

The fourth proportional to 15,700.21, 21,660.14 and 8,982.24 is: 12,391.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,700.21 : 21,660.14 = 8,982.24 : x
  2. Step 2: Convert to fraction form
    15,700.21/21,660.14 = 8,982.24/x
  3. Step 3: Cross multiply
    15,700.21x = 21,660.14 × 8,982.24
  4. Step 4: Simplify right side
    15,700.21x = 194,556,517.14
  5. Step 5: Solve for x
    x = 194,556,517.14/15,700.21
  6. Step 6: Final answer
    x = 12,391.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.