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Finding the Fourth Proportional to 12,671.76, 17,487 and 6,929.22

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Solution

The fourth proportional to 12,671.76, 17,487 and 6,929.22 is: 9,562.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.76 : 17,487 = 6,929.22 : x
  2. Step 2: Convert to fraction form
    12,671.76/17,487 = 6,929.22/x
  3. Step 3: Cross multiply
    12,671.76x = 17,487 × 6,929.22
  4. Step 4: Simplify right side
    12,671.76x = 121,171,270.14
  5. Step 5: Solve for x
    x = 121,171,270.14/12,671.76
  6. Step 6: Final answer
    x = 9,562.31

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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.