Home / 13,370.19-20,091.64-7,134.61

Finding the Fourth Proportional to 13,370.19, 20,091.64 and 7,134.61

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Solution

The fourth proportional to 13,370.19, 20,091.64 and 7,134.61 is: 10,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.19 : 20,091.64 = 7,134.61 : x
  2. Step 2: Convert to fraction form
    13,370.19/20,091.64 = 7,134.61/x
  3. Step 3: Cross multiply
    13,370.19x = 20,091.64 × 7,134.61
  4. Step 4: Simplify right side
    13,370.19x = 143,346,015.66
  5. Step 5: Solve for x
    x = 143,346,015.66/13,370.19
  6. Step 6: Final answer
    x = 10,721.31

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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.