Home / 15,658.21-21,608.30-8,585.09

Finding the Fourth Proportional to 15,658.21, 21,608.30 and 8,585.09

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Solution

The fourth proportional to 15,658.21, 21,608.30 and 8,585.09 is: 11,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658.21 : 21,608.30 = 8,585.09 : x
  2. Step 2: Convert to fraction form
    15,658.21/21,608.30 = 8,585.09/x
  3. Step 3: Cross multiply
    15,658.21x = 21,608.30 × 8,585.09
  4. Step 4: Simplify right side
    15,658.21x = 185,509,049.28
  5. Step 5: Solve for x
    x = 185,509,049.28/15,658.21
  6. Step 6: Final answer
    x = 11,847.40

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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.