Home / 10,981.06-15,151.21-6,505.91

Finding the Fourth Proportional to 10,981.06, 15,151.21 and 6,505.91

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Solution

The fourth proportional to 10,981.06, 15,151.21 and 6,505.91 is: 8,976.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.06 : 15,151.21 = 6,505.91 : x
  2. Step 2: Convert to fraction form
    10,981.06/15,151.21 = 6,505.91/x
  3. Step 3: Cross multiply
    10,981.06x = 15,151.21 × 6,505.91
  4. Step 4: Simplify right side
    10,981.06x = 98,572,408.65
  5. Step 5: Solve for x
    x = 98,572,408.65/10,981.06
  6. Step 6: Final answer
    x = 8,976.58

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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.