Home / 10,949.24-15,114.78-7,987.67

Finding the Fourth Proportional to 10,949.24, 15,114.78 and 7,987.67

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Solution

The fourth proportional to 10,949.24, 15,114.78 and 7,987.67 is: 11,026.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,949.24 : 15,114.78 = 7,987.67 : x
  2. Step 2: Convert to fraction form
    10,949.24/15,114.78 = 7,987.67/x
  3. Step 3: Cross multiply
    10,949.24x = 15,114.78 × 7,987.67
  4. Step 4: Simplify right side
    10,949.24x = 120,731,874.76
  5. Step 5: Solve for x
    x = 120,731,874.76/10,949.24
  6. Step 6: Final answer
    x = 11,026.51

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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.