Home / 11,426.69-15,768.51-6,390.92

Finding the Fourth Proportional to 11,426.69, 15,768.51 and 6,390.92

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Solution

The fourth proportional to 11,426.69, 15,768.51 and 6,390.92 is: 8,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.69 : 15,768.51 = 6,390.92 : x
  2. Step 2: Convert to fraction form
    11,426.69/15,768.51 = 6,390.92/x
  3. Step 3: Cross multiply
    11,426.69x = 15,768.51 × 6,390.92
  4. Step 4: Simplify right side
    11,426.69x = 100,775,207.09
  5. Step 5: Solve for x
    x = 100,775,207.09/11,426.69
  6. Step 6: Final answer
    x = 8,819.29

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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.