Home / 11,426.20-15,768.94-6,390.32

Finding the Fourth Proportional to 11,426.20, 15,768.94 and 6,390.32

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Solution

The fourth proportional to 11,426.20, 15,768.94 and 6,390.32 is: 8,819.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.20 : 15,768.94 = 6,390.32 : x
  2. Step 2: Convert to fraction form
    11,426.20/15,768.94 = 6,390.32/x
  3. Step 3: Cross multiply
    11,426.20x = 15,768.94 × 6,390.32
  4. Step 4: Simplify right side
    11,426.20x = 100,768,572.66
  5. Step 5: Solve for x
    x = 100,768,572.66/11,426.20
  6. Step 6: Final answer
    x = 8,819.08

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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.