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Finding the Fourth Proportional to 15,120.02, 20,864.04 and 8,404.58

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Solution

The fourth proportional to 15,120.02, 20,864.04 and 8,404.58 is: 11,597.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.02 : 20,864.04 = 8,404.58 : x
  2. Step 2: Convert to fraction form
    15,120.02/20,864.04 = 8,404.58/x
  3. Step 3: Cross multiply
    15,120.02x = 20,864.04 × 8,404.58
  4. Step 4: Simplify right side
    15,120.02x = 175,353,493.30
  5. Step 5: Solve for x
    x = 175,353,493.30/15,120.02
  6. Step 6: Final answer
    x = 11,597.44

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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.