Home / 28,110.92-42,166.30-8,389

Finding the Fourth Proportional to 28,110.92, 42,166.30 and 8,389

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Solution

The fourth proportional to 28,110.92, 42,166.30 and 8,389 is: 12,583.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.92 : 42,166.30 = 8,389 : x
  2. Step 2: Convert to fraction form
    28,110.92/42,166.30 = 8,389/x
  3. Step 3: Cross multiply
    28,110.92x = 42,166.30 × 8,389
  4. Step 4: Simplify right side
    28,110.92x = 353,733,090.70
  5. Step 5: Solve for x
    x = 353,733,090.70/28,110.92
  6. Step 6: Final answer
    x = 12,583.48

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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.