Home / 10,147.61-15,221.41-6,640.57

Finding the Fourth Proportional to 10,147.61, 15,221.41 and 6,640.57

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Solution

The fourth proportional to 10,147.61, 15,221.41 and 6,640.57 is: 9,960.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.61 : 15,221.41 = 6,640.57 : x
  2. Step 2: Convert to fraction form
    10,147.61/15,221.41 = 6,640.57/x
  3. Step 3: Cross multiply
    10,147.61x = 15,221.41 × 6,640.57
  4. Step 4: Simplify right side
    10,147.61x = 101,078,762.50
  5. Step 5: Solve for x
    x = 101,078,762.50/10,147.61
  6. Step 6: Final answer
    x = 9,960.85

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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.