Home / 11,406.20-15,740.16-6,370.38

Finding the Fourth Proportional to 11,406.20, 15,740.16 and 6,370.38

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Solution

The fourth proportional to 11,406.20, 15,740.16 and 6,370.38 is: 8,790.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,406.20 : 15,740.16 = 6,370.38 : x
  2. Step 2: Convert to fraction form
    11,406.20/15,740.16 = 6,370.38/x
  3. Step 3: Cross multiply
    11,406.20x = 15,740.16 × 6,370.38
  4. Step 4: Simplify right side
    11,406.20x = 100,270,800.46
  5. Step 5: Solve for x
    x = 100,270,800.46/11,406.20
  6. Step 6: Final answer
    x = 8,790.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.