Home / 11,136.24-15,367.44-6,420.24

Finding the Fourth Proportional to 11,136.24, 15,367.44 and 6,420.24

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Solution

The fourth proportional to 11,136.24, 15,367.44 and 6,420.24 is: 8,859.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,136.24 : 15,367.44 = 6,420.24 : x
  2. Step 2: Convert to fraction form
    11,136.24/15,367.44 = 6,420.24/x
  3. Step 3: Cross multiply
    11,136.24x = 15,367.44 × 6,420.24
  4. Step 4: Simplify right side
    11,136.24x = 98,662,652.99
  5. Step 5: Solve for x
    x = 98,662,652.99/11,136.24
  6. Step 6: Final answer
    x = 8,859.60

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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.