Home / 13,390.24-20,100.96-7,847.68

Finding the Fourth Proportional to 13,390.24, 20,100.96 and 7,847.68

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Solution

The fourth proportional to 13,390.24, 20,100.96 and 7,847.68 is: 11,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.24 : 20,100.96 = 7,847.68 : x
  2. Step 2: Convert to fraction form
    13,390.24/20,100.96 = 7,847.68/x
  3. Step 3: Cross multiply
    13,390.24x = 20,100.96 × 7,847.68
  4. Step 4: Simplify right side
    13,390.24x = 157,745,901.77
  5. Step 5: Solve for x
    x = 157,745,901.77/13,390.24
  6. Step 6: Final answer
    x = 11,780.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.