Home / 31,689.86-47,535.72-11,964.02

Finding the Fourth Proportional to 31,689.86, 47,535.72 and 11,964.02

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Solution

The fourth proportional to 31,689.86, 47,535.72 and 11,964.02 is: 17,946.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.86 : 47,535.72 = 11,964.02 : x
  2. Step 2: Convert to fraction form
    31,689.86/47,535.72 = 11,964.02/x
  3. Step 3: Cross multiply
    31,689.86x = 47,535.72 × 11,964.02
  4. Step 4: Simplify right side
    31,689.86x = 568,718,304.79
  5. Step 5: Solve for x
    x = 568,718,304.79/31,689.86
  6. Step 6: Final answer
    x = 17,946.38

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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.