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Finding the Fourth Proportional to 10,136.80, 13,989 and 6,360.11

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Solution

The fourth proportional to 10,136.80, 13,989 and 6,360.11 is: 8,777.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,136.80 : 13,989 = 6,360.11 : x
  2. Step 2: Convert to fraction form
    10,136.80/13,989 = 6,360.11/x
  3. Step 3: Cross multiply
    10,136.80x = 13,989 × 6,360.11
  4. Step 4: Simplify right side
    10,136.80x = 88,971,578.79
  5. Step 5: Solve for x
    x = 88,971,578.79/10,136.80
  6. Step 6: Final answer
    x = 8,777.09

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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.