Home / 11,136.57-15,369.84-6,889.65

Finding the Fourth Proportional to 11,136.57, 15,369.84 and 6,889.65

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Solution

The fourth proportional to 11,136.57, 15,369.84 and 6,889.65 is: 9,508.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,136.57 : 15,369.84 = 6,889.65 : x
  2. Step 2: Convert to fraction form
    11,136.57/15,369.84 = 6,889.65/x
  3. Step 3: Cross multiply
    11,136.57x = 15,369.84 × 6,889.65
  4. Step 4: Simplify right side
    11,136.57x = 105,892,818.16
  5. Step 5: Solve for x
    x = 105,892,818.16/11,136.57
  6. Step 6: Final answer
    x = 9,508.57

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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.