Home / 10,516.40-15,774.60-3,942.80

Finding the Fourth Proportional to 10,516.40, 15,774.60 and 3,942.80

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Solution

The fourth proportional to 10,516.40, 15,774.60 and 3,942.80 is: 5,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,516.40 : 15,774.60 = 3,942.80 : x
  2. Step 2: Convert to fraction form
    10,516.40/15,774.60 = 3,942.80/x
  3. Step 3: Cross multiply
    10,516.40x = 15,774.60 × 3,942.80
  4. Step 4: Simplify right side
    10,516.40x = 62,196,092.88
  5. Step 5: Solve for x
    x = 62,196,092.88/10,516.40
  6. Step 6: Final answer
    x = 5,914.20

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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.