Home / 31,964.86-47,963.49-21,298.51

Finding the Fourth Proportional to 31,964.86, 47,963.49 and 21,298.51

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Solution

The fourth proportional to 31,964.86, 47,963.49 and 21,298.51 is: 31,958.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,964.86 : 47,963.49 = 21,298.51 : x
  2. Step 2: Convert to fraction form
    31,964.86/47,963.49 = 21,298.51/x
  3. Step 3: Cross multiply
    31,964.86x = 47,963.49 × 21,298.51
  4. Step 4: Simplify right side
    31,964.86x = 1,021,550,871.40
  5. Step 5: Solve for x
    x = 1,021,550,871.40/31,964.86
  6. Step 6: Final answer
    x = 31,958.56

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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.