Home / 10,486.67-15,730.49-3,091.20

Finding the Fourth Proportional to 10,486.67, 15,730.49 and 3,091.20

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Solution

The fourth proportional to 10,486.67, 15,730.49 and 3,091.20 is: 4,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,486.67 : 15,730.49 = 3,091.20 : x
  2. Step 2: Convert to fraction form
    10,486.67/15,730.49 = 3,091.20/x
  3. Step 3: Cross multiply
    10,486.67x = 15,730.49 × 3,091.20
  4. Step 4: Simplify right side
    10,486.67x = 48,626,039.43
  5. Step 5: Solve for x
    x = 48,626,039.43/10,486.67
  6. Step 6: Final answer
    x = 4,636.94

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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.