Home / 31,821.40-47,783.10-25,301.80

Finding the Fourth Proportional to 31,821.40, 47,783.10 and 25,301.80

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Solution

The fourth proportional to 31,821.40, 47,783.10 and 25,301.80 is: 37,993.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,821.40 : 47,783.10 = 25,301.80 : x
  2. Step 2: Convert to fraction form
    31,821.40/47,783.10 = 25,301.80/x
  3. Step 3: Cross multiply
    31,821.40x = 47,783.10 × 25,301.80
  4. Step 4: Simplify right side
    31,821.40x = 1,208,998,439.58
  5. Step 5: Solve for x
    x = 1,208,998,439.58/31,821.40
  6. Step 6: Final answer
    x = 37,993.25

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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.