Home / 31,811.13-47,683.89-14,285.97

Finding the Fourth Proportional to 31,811.13, 47,683.89 and 14,285.97

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Solution

The fourth proportional to 31,811.13, 47,683.89 and 14,285.97 is: 21,414.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.13 : 47,683.89 = 14,285.97 : x
  2. Step 2: Convert to fraction form
    31,811.13/47,683.89 = 14,285.97/x
  3. Step 3: Cross multiply
    31,811.13x = 47,683.89 × 14,285.97
  4. Step 4: Simplify right side
    31,811.13x = 681,210,622.02
  5. Step 5: Solve for x
    x = 681,210,622.02/31,811.13
  6. Step 6: Final answer
    x = 21,414.22

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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.