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Finding the Fourth Proportional to 12,476.76, 17,217.94 and 6,887.76

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Solution

The fourth proportional to 12,476.76, 17,217.94 and 6,887.76 is: 9,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.76 : 17,217.94 = 6,887.76 : x
  2. Step 2: Convert to fraction form
    12,476.76/17,217.94 = 6,887.76/x
  3. Step 3: Cross multiply
    12,476.76x = 17,217.94 × 6,887.76
  4. Step 4: Simplify right side
    12,476.76x = 118,593,038.41
  5. Step 5: Solve for x
    x = 118,593,038.41/12,476.76
  6. Step 6: Final answer
    x = 9,505.11

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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.