Home / 10,704.10-16,136.38-9,990.50

Finding the Fourth Proportional to 10,704.10, 16,136.38 and 9,990.50

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Solution

The fourth proportional to 10,704.10, 16,136.38 and 9,990.50 is: 15,060.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,704.10 : 16,136.38 = 9,990.50 : x
  2. Step 2: Convert to fraction form
    10,704.10/16,136.38 = 9,990.50/x
  3. Step 3: Cross multiply
    10,704.10x = 16,136.38 × 9,990.50
  4. Step 4: Simplify right side
    10,704.10x = 161,210,504.39
  5. Step 5: Solve for x
    x = 161,210,504.39/10,704.10
  6. Step 6: Final answer
    x = 15,060.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.