Home / 31,986.88-47,980.31-11,210.38

Finding the Fourth Proportional to 31,986.88, 47,980.31 and 11,210.38

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Solution

The fourth proportional to 31,986.88, 47,980.31 and 11,210.38 is: 16,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.88 : 47,980.31 = 11,210.38 : x
  2. Step 2: Convert to fraction form
    31,986.88/47,980.31 = 11,210.38/x
  3. Step 3: Cross multiply
    31,986.88x = 47,980.31 × 11,210.38
  4. Step 4: Simplify right side
    31,986.88x = 537,877,507.62
  5. Step 5: Solve for x
    x = 537,877,507.62/31,986.88
  6. Step 6: Final answer
    x = 16,815.57

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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.