Home / 15,370.92-21,212.58-8,658.68

Finding the Fourth Proportional to 15,370.92, 21,212.58 and 8,658.68

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Solution

The fourth proportional to 15,370.92, 21,212.58 and 8,658.68 is: 11,949.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,370.92 : 21,212.58 = 8,658.68 : x
  2. Step 2: Convert to fraction form
    15,370.92/21,212.58 = 8,658.68/x
  3. Step 3: Cross multiply
    15,370.92x = 21,212.58 × 8,658.68
  4. Step 4: Simplify right side
    15,370.92x = 183,672,942.19
  5. Step 5: Solve for x
    x = 183,672,942.19/15,370.92
  6. Step 6: Final answer
    x = 11,949.38

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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.