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Finding the Fourth Proportional to 11,457.76, 15,819.24 and 8,800.36

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Solution

The fourth proportional to 11,457.76, 15,819.24 and 8,800.36 is: 12,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,457.76 : 15,819.24 = 8,800.36 : x
  2. Step 2: Convert to fraction form
    11,457.76/15,819.24 = 8,800.36/x
  3. Step 3: Cross multiply
    11,457.76x = 15,819.24 × 8,800.36
  4. Step 4: Simplify right side
    11,457.76x = 139,215,006.93
  5. Step 5: Solve for x
    x = 139,215,006.93/11,457.76
  6. Step 6: Final answer
    x = 12,150.28

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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.