Home / 31,699.05-47,521.82-19,986.45

Finding the Fourth Proportional to 31,699.05, 47,521.82 and 19,986.45

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Solution

The fourth proportional to 31,699.05, 47,521.82 and 19,986.45 is: 29,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.05 : 47,521.82 = 19,986.45 : x
  2. Step 2: Convert to fraction form
    31,699.05/47,521.82 = 19,986.45/x
  3. Step 3: Cross multiply
    31,699.05x = 47,521.82 × 19,986.45
  4. Step 4: Simplify right side
    31,699.05x = 949,792,379.41
  5. Step 5: Solve for x
    x = 949,792,379.41/31,699.05
  6. Step 6: Final answer
    x = 29,962.80

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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.