Home / 7,136.10-10,704.15-6,990.30

Finding the Fourth Proportional to 7,136.10, 10,704.15 and 6,990.30

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Solution

The fourth proportional to 7,136.10, 10,704.15 and 6,990.30 is: 10,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.10 : 10,704.15 = 6,990.30 : x
  2. Step 2: Convert to fraction form
    7,136.10/10,704.15 = 6,990.30/x
  3. Step 3: Cross multiply
    7,136.10x = 10,704.15 × 6,990.30
  4. Step 4: Simplify right side
    7,136.10x = 74,825,219.75
  5. Step 5: Solve for x
    x = 74,825,219.75/7,136.10
  6. Step 6: Final answer
    x = 10,485.45

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.