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Finding the Fourth Proportional to 12,404.15, 17,117.88 and 6,738.99

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Solution

The fourth proportional to 12,404.15, 17,117.88 and 6,738.99 is: 9,299.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.15 : 17,117.88 = 6,738.99 : x
  2. Step 2: Convert to fraction form
    12,404.15/17,117.88 = 6,738.99/x
  3. Step 3: Cross multiply
    12,404.15x = 17,117.88 × 6,738.99
  4. Step 4: Simplify right side
    12,404.15x = 115,357,102.86
  5. Step 5: Solve for x
    x = 115,357,102.86/12,404.15
  6. Step 6: Final answer
    x = 9,299.88

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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.