Home / 11,768.24-16,240.23-6,390.70

Finding the Fourth Proportional to 11,768.24, 16,240.23 and 6,390.70

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Solution

The fourth proportional to 11,768.24, 16,240.23 and 6,390.70 is: 8,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,768.24 : 16,240.23 = 6,390.70 : x
  2. Step 2: Convert to fraction form
    11,768.24/16,240.23 = 6,390.70/x
  3. Step 3: Cross multiply
    11,768.24x = 16,240.23 × 6,390.70
  4. Step 4: Simplify right side
    11,768.24x = 103,786,397.26
  5. Step 5: Solve for x
    x = 103,786,397.26/11,768.24
  6. Step 6: Final answer
    x = 8,819.20

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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.