Home / 31,840.13-47,763.23-13,121.43

Finding the Fourth Proportional to 31,840.13, 47,763.23 and 13,121.43

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Solution

The fourth proportional to 31,840.13, 47,763.23 and 13,121.43 is: 19,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,840.13 : 47,763.23 = 13,121.43 : x
  2. Step 2: Convert to fraction form
    31,840.13/47,763.23 = 13,121.43/x
  3. Step 3: Cross multiply
    31,840.13x = 47,763.23 × 13,121.43
  4. Step 4: Simplify right side
    31,840.13x = 626,721,813.41
  5. Step 5: Solve for x
    x = 626,721,813.41/31,840.13
  6. Step 6: Final answer
    x = 19,683.40

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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.