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Finding the Fourth Proportional to 12,586.53, 17,369.06 and 6,921.27

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Solution

The fourth proportional to 12,586.53, 17,369.06 and 6,921.27 is: 9,551.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.53 : 17,369.06 = 6,921.27 : x
  2. Step 2: Convert to fraction form
    12,586.53/17,369.06 = 6,921.27/x
  3. Step 3: Cross multiply
    12,586.53x = 17,369.06 × 6,921.27
  4. Step 4: Simplify right side
    12,586.53x = 120,215,919.30
  5. Step 5: Solve for x
    x = 120,215,919.30/12,586.53
  6. Step 6: Final answer
    x = 9,551.16

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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.