Home / 20,410.72-28,177.52-13,731.48

Finding the Fourth Proportional to 20,410.72, 28,177.52 and 13,731.48

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Solution

The fourth proportional to 20,410.72, 28,177.52 and 13,731.48 is: 18,956.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.72 : 28,177.52 = 13,731.48 : x
  2. Step 2: Convert to fraction form
    20,410.72/28,177.52 = 13,731.48/x
  3. Step 3: Cross multiply
    20,410.72x = 28,177.52 × 13,731.48
  4. Step 4: Simplify right side
    20,410.72x = 386,919,052.33
  5. Step 5: Solve for x
    x = 386,919,052.33/20,410.72
  6. Step 6: Final answer
    x = 18,956.66

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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.