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Finding the Fourth Proportional to 12,684.74, 17,505.06 and 7,649.24

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Solution

The fourth proportional to 12,684.74, 17,505.06 and 7,649.24 is: 10,556.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.74 : 17,505.06 = 7,649.24 : x
  2. Step 2: Convert to fraction form
    12,684.74/17,505.06 = 7,649.24/x
  3. Step 3: Cross multiply
    12,684.74x = 17,505.06 × 7,649.24
  4. Step 4: Simplify right side
    12,684.74x = 133,900,405.15
  5. Step 5: Solve for x
    x = 133,900,405.15/12,684.74
  6. Step 6: Final answer
    x = 10,556.02

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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.