Home / 20,373.44-28,119.20-13,305.92

Finding the Fourth Proportional to 20,373.44, 28,119.20 and 13,305.92

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Solution

The fourth proportional to 20,373.44, 28,119.20 and 13,305.92 is: 18,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.44 : 28,119.20 = 13,305.92 : x
  2. Step 2: Convert to fraction form
    20,373.44/28,119.20 = 13,305.92/x
  3. Step 3: Cross multiply
    20,373.44x = 28,119.20 × 13,305.92
  4. Step 4: Simplify right side
    20,373.44x = 374,151,825.66
  5. Step 5: Solve for x
    x = 374,151,825.66/20,373.44
  6. Step 6: Final answer
    x = 18,364.69

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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.