Home / 11,424.40-17,136.60-7,487.80

Finding the Fourth Proportional to 11,424.40, 17,136.60 and 7,487.80

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Solution

The fourth proportional to 11,424.40, 17,136.60 and 7,487.80 is: 11,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,424.40 : 17,136.60 = 7,487.80 : x
  2. Step 2: Convert to fraction form
    11,424.40/17,136.60 = 7,487.80/x
  3. Step 3: Cross multiply
    11,424.40x = 17,136.60 × 7,487.80
  4. Step 4: Simplify right side
    11,424.40x = 128,315,433.48
  5. Step 5: Solve for x
    x = 128,315,433.48/11,424.40
  6. Step 6: Final answer
    x = 11,231.70

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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.