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Finding the Fourth Proportional to 35,479.25, 53,218.88 and 12,105.69

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Solution

The fourth proportional to 35,479.25, 53,218.88 and 12,105.69 is: 18,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,479.25 : 53,218.88 = 12,105.69 : x
  2. Step 2: Convert to fraction form
    35,479.25/53,218.88 = 12,105.69/x
  3. Step 3: Cross multiply
    35,479.25x = 53,218.88 × 12,105.69
  4. Step 4: Simplify right side
    35,479.25x = 644,251,202.90
  5. Step 5: Solve for x
    x = 644,251,202.90/35,479.25
  6. Step 6: Final answer
    x = 18,158.54

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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.