Home / 12,586.91-17,369.57-6,921.67

Finding the Fourth Proportional to 12,586.91, 17,369.57 and 6,921.67

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Solution

The fourth proportional to 12,586.91, 17,369.57 and 6,921.67 is: 9,551.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.91 : 17,369.57 = 6,921.67 : x
  2. Step 2: Convert to fraction form
    12,586.91/17,369.57 = 6,921.67/x
  3. Step 3: Cross multiply
    12,586.91x = 17,369.57 × 6,921.67
  4. Step 4: Simplify right side
    12,586.91x = 120,226,405.46
  5. Step 5: Solve for x
    x = 120,226,405.46/12,586.91
  6. Step 6: Final answer
    x = 9,551.71

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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.