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Finding the Fourth Proportional to 12,661.29, 17,472.94 and 6,919.13

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Solution

The fourth proportional to 12,661.29, 17,472.94 and 6,919.13 is: 9,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.29 : 17,472.94 = 6,919.13 : x
  2. Step 2: Convert to fraction form
    12,661.29/17,472.94 = 6,919.13/x
  3. Step 3: Cross multiply
    12,661.29x = 17,472.94 × 6,919.13
  4. Step 4: Simplify right side
    12,661.29x = 120,897,543.34
  5. Step 5: Solve for x
    x = 120,897,543.34/12,661.29
  6. Step 6: Final answer
    x = 9,548.60

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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.