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Finding the Fourth Proportional to 15,163.61, 20,925.23 and 8,448.89

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Solution

The fourth proportional to 15,163.61, 20,925.23 and 8,448.89 is: 11,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.61 : 20,925.23 = 8,448.89 : x
  2. Step 2: Convert to fraction form
    15,163.61/20,925.23 = 8,448.89/x
  3. Step 3: Cross multiply
    15,163.61x = 20,925.23 × 8,448.89
  4. Step 4: Simplify right side
    15,163.61x = 176,794,819.62
  5. Step 5: Solve for x
    x = 176,794,819.62/15,163.61
  6. Step 6: Final answer
    x = 11,659.15

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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.