Home / 15,772.20-23,658.30-12,661.80

Finding the Fourth Proportional to 15,772.20, 23,658.30 and 12,661.80

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Solution

The fourth proportional to 15,772.20, 23,658.30 and 12,661.80 is: 18,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.20 : 23,658.30 = 12,661.80 : x
  2. Step 2: Convert to fraction form
    15,772.20/23,658.30 = 12,661.80/x
  3. Step 3: Cross multiply
    15,772.20x = 23,658.30 × 12,661.80
  4. Step 4: Simplify right side
    15,772.20x = 299,556,662.94
  5. Step 5: Solve for x
    x = 299,556,662.94/15,772.20
  6. Step 6: Final answer
    x = 18,992.70

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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.