Home / 31,904.27-47,874-13,179.95

Finding the Fourth Proportional to 31,904.27, 47,874 and 13,179.95

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Solution

The fourth proportional to 31,904.27, 47,874 and 13,179.95 is: 19,777.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,904.27 : 47,874 = 13,179.95 : x
  2. Step 2: Convert to fraction form
    31,904.27/47,874 = 13,179.95/x
  3. Step 3: Cross multiply
    31,904.27x = 47,874 × 13,179.95
  4. Step 4: Simplify right side
    31,904.27x = 630,976,686.93
  5. Step 5: Solve for x
    x = 630,976,686.93/31,904.27
  6. Step 6: Final answer
    x = 19,777.19

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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.