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Finding the Fourth Proportional to 19,448.10, 29,168.10 and 8,355.15

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Solution

The fourth proportional to 19,448.10, 29,168.10 and 8,355.15 is: 12,530.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,448.10 : 29,168.10 = 8,355.15 : x
  2. Step 2: Convert to fraction form
    19,448.10/29,168.10 = 8,355.15/x
  3. Step 3: Cross multiply
    19,448.10x = 29,168.10 × 8,355.15
  4. Step 4: Simplify right side
    19,448.10x = 243,703,850.72
  5. Step 5: Solve for x
    x = 243,703,850.72/19,448.10
  6. Step 6: Final answer
    x = 12,530.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.