Home / 12,586.32-17,369.12-6,921.43

Finding the Fourth Proportional to 12,586.32, 17,369.12 and 6,921.43

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Solution

The fourth proportional to 12,586.32, 17,369.12 and 6,921.43 is: 9,551.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.32 : 17,369.12 = 6,921.43 : x
  2. Step 2: Convert to fraction form
    12,586.32/17,369.12 = 6,921.43/x
  3. Step 3: Cross multiply
    12,586.32x = 17,369.12 × 6,921.43
  4. Step 4: Simplify right side
    12,586.32x = 120,219,122.12
  5. Step 5: Solve for x
    x = 120,219,122.12/12,586.32
  6. Step 6: Final answer
    x = 9,551.57

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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.