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Finding the Fourth Proportional to 12,476.81, 17,218.01 and 6,887.81

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Solution

The fourth proportional to 12,476.81, 17,218.01 and 6,887.81 is: 9,505.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.81 : 17,218.01 = 6,887.81 : x
  2. Step 2: Convert to fraction form
    12,476.81/17,218.01 = 6,887.81/x
  3. Step 3: Cross multiply
    12,476.81x = 17,218.01 × 6,887.81
  4. Step 4: Simplify right side
    12,476.81x = 118,594,441.72
  5. Step 5: Solve for x
    x = 118,594,441.72/12,476.81
  6. Step 6: Final answer
    x = 9,505.19

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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.