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Finding the Fourth Proportional to 12,448.05, 17,154.68 and 8,905.11

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Solution

The fourth proportional to 12,448.05, 17,154.68 and 8,905.11 is: 12,272.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,448.05 : 17,154.68 = 8,905.11 : x
  2. Step 2: Convert to fraction form
    12,448.05/17,154.68 = 8,905.11/x
  3. Step 3: Cross multiply
    12,448.05x = 17,154.68 × 8,905.11
  4. Step 4: Simplify right side
    12,448.05x = 152,764,312.41
  5. Step 5: Solve for x
    x = 152,764,312.41/12,448.05
  6. Step 6: Final answer
    x = 12,272.15

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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.