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Finding the Fourth Proportional to 10,879.68, 16,247.28 and 8,802.24

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Solution

The fourth proportional to 10,879.68, 16,247.28 and 8,802.24 is: 13,144.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.68 : 16,247.28 = 8,802.24 : x
  2. Step 2: Convert to fraction form
    10,879.68/16,247.28 = 8,802.24/x
  3. Step 3: Cross multiply
    10,879.68x = 16,247.28 × 8,802.24
  4. Step 4: Simplify right side
    10,879.68x = 143,012,457.91
  5. Step 5: Solve for x
    x = 143,012,457.91/10,879.68
  6. Step 6: Final answer
    x = 13,144.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.