Home / 11,426.85-15,768.89-6,391.03

Finding the Fourth Proportional to 11,426.85, 15,768.89 and 6,391.03

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Solution

The fourth proportional to 11,426.85, 15,768.89 and 6,391.03 is: 8,819.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.85 : 15,768.89 = 6,391.03 : x
  2. Step 2: Convert to fraction form
    11,426.85/15,768.89 = 6,391.03/x
  3. Step 3: Cross multiply
    11,426.85x = 15,768.89 × 6,391.03
  4. Step 4: Simplify right side
    11,426.85x = 100,779,449.06
  5. Step 5: Solve for x
    x = 100,779,449.06/11,426.85
  6. Step 6: Final answer
    x = 8,819.53

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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.