Home / 25,986.15-38,908.80-13,479.93

Finding the Fourth Proportional to 25,986.15, 38,908.80 and 13,479.93

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Solution

The fourth proportional to 25,986.15, 38,908.80 and 13,479.93 is: 20,183.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,986.15 : 38,908.80 = 13,479.93 : x
  2. Step 2: Convert to fraction form
    25,986.15/38,908.80 = 13,479.93/x
  3. Step 3: Cross multiply
    25,986.15x = 38,908.80 × 13,479.93
  4. Step 4: Simplify right side
    25,986.15x = 524,487,900.38
  5. Step 5: Solve for x
    x = 524,487,900.38/25,986.15
  6. Step 6: Final answer
    x = 20,183.36

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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.