Home / 11,136.90-16,695.28-5,211.48

Finding the Fourth Proportional to 11,136.90, 16,695.28 and 5,211.48

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Solution

The fourth proportional to 11,136.90, 16,695.28 and 5,211.48 is: 7,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,136.90 : 16,695.28 = 5,211.48 : x
  2. Step 2: Convert to fraction form
    11,136.90/16,695.28 = 5,211.48/x
  3. Step 3: Cross multiply
    11,136.90x = 16,695.28 × 5,211.48
  4. Step 4: Simplify right side
    11,136.90x = 87,007,117.81
  5. Step 5: Solve for x
    x = 87,007,117.81/11,136.90
  6. Step 6: Final answer
    x = 7,812.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.