Home / 18,654.81-25,739.33-13,621.74

Finding the Fourth Proportional to 18,654.81, 25,739.33 and 13,621.74

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Solution

The fourth proportional to 18,654.81, 25,739.33 and 13,621.74 is: 18,794.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.81 : 25,739.33 = 13,621.74 : x
  2. Step 2: Convert to fraction form
    18,654.81/25,739.33 = 13,621.74/x
  3. Step 3: Cross multiply
    18,654.81x = 25,739.33 × 13,621.74
  4. Step 4: Simplify right side
    18,654.81x = 350,614,392.93
  5. Step 5: Solve for x
    x = 350,614,392.93/18,654.81
  6. Step 6: Final answer
    x = 18,794.85

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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.