Home / 31,986.86-47,955.51-21,439.98

Finding the Fourth Proportional to 31,986.86, 47,955.51 and 21,439.98

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Solution

The fourth proportional to 31,986.86, 47,955.51 and 21,439.98 is: 32,143.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.86 : 47,955.51 = 21,439.98 : x
  2. Step 2: Convert to fraction form
    31,986.86/47,955.51 = 21,439.98/x
  3. Step 3: Cross multiply
    31,986.86x = 47,955.51 × 21,439.98
  4. Step 4: Simplify right side
    31,986.86x = 1,028,165,175.29
  5. Step 5: Solve for x
    x = 1,028,165,175.29/31,986.86
  6. Step 6: Final answer
    x = 32,143.37

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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.