Home / 18,705.27-25,815.74-13,036.35

Finding the Fourth Proportional to 18,705.27, 25,815.74 and 13,036.35

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Solution

The fourth proportional to 18,705.27, 25,815.74 and 13,036.35 is: 17,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.27 : 25,815.74 = 13,036.35 : x
  2. Step 2: Convert to fraction form
    18,705.27/25,815.74 = 13,036.35/x
  3. Step 3: Cross multiply
    18,705.27x = 25,815.74 × 13,036.35
  4. Step 4: Simplify right side
    18,705.27x = 336,542,956.97
  5. Step 5: Solve for x
    x = 336,542,956.97/18,705.27
  6. Step 6: Final answer
    x = 17,991.88

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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.