Home / 10,516.23-15,774.62-3,120.80

Finding the Fourth Proportional to 10,516.23, 15,774.62 and 3,120.80

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Solution

The fourth proportional to 10,516.23, 15,774.62 and 3,120.80 is: 4,681.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,516.23 : 15,774.62 = 3,120.80 : x
  2. Step 2: Convert to fraction form
    10,516.23/15,774.62 = 3,120.80/x
  3. Step 3: Cross multiply
    10,516.23x = 15,774.62 × 3,120.80
  4. Step 4: Simplify right side
    10,516.23x = 49,229,339.62
  5. Step 5: Solve for x
    x = 49,229,339.62/10,516.23
  6. Step 6: Final answer
    x = 4,681.27

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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.