Home / 10,968.89-15,136.16-6,491.86

Finding the Fourth Proportional to 10,968.89, 15,136.16 and 6,491.86

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Solution

The fourth proportional to 10,968.89, 15,136.16 and 6,491.86 is: 8,958.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,968.89 : 15,136.16 = 6,491.86 : x
  2. Step 2: Convert to fraction form
    10,968.89/15,136.16 = 6,491.86/x
  3. Step 3: Cross multiply
    10,968.89x = 15,136.16 × 6,491.86
  4. Step 4: Simplify right side
    10,968.89x = 98,261,761.36
  5. Step 5: Solve for x
    x = 98,261,761.36/10,968.89
  6. Step 6: Final answer
    x = 8,958.23

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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.