Home / 31,660.31-47,506.81-13,903.43

Finding the Fourth Proportional to 31,660.31, 47,506.81 and 13,903.43

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Solution

The fourth proportional to 31,660.31, 47,506.81 and 13,903.43 is: 20,862.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,660.31 : 47,506.81 = 13,903.43 : x
  2. Step 2: Convert to fraction form
    31,660.31/47,506.81 = 13,903.43/x
  3. Step 3: Cross multiply
    31,660.31x = 47,506.81 × 13,903.43
  4. Step 4: Simplify right side
    31,660.31x = 660,507,365.62
  5. Step 5: Solve for x
    x = 660,507,365.62/31,660.31
  6. Step 6: Final answer
    x = 20,862.32

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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.