Home / 15,690.90-23,514.99-8,660.44

Finding the Fourth Proportional to 15,690.90, 23,514.99 and 8,660.44

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Solution

The fourth proportional to 15,690.90, 23,514.99 and 8,660.44 is: 12,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.90 : 23,514.99 = 8,660.44 : x
  2. Step 2: Convert to fraction form
    15,690.90/23,514.99 = 8,660.44/x
  3. Step 3: Cross multiply
    15,690.90x = 23,514.99 × 8,660.44
  4. Step 4: Simplify right side
    15,690.90x = 203,650,160.00
  5. Step 5: Solve for x
    x = 203,650,160.00/15,690.90
  6. Step 6: Final answer
    x = 12,978.87

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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.