Home / 31,868.36-43,977.19-17,720.90

Finding the Fourth Proportional to 31,868.36, 43,977.19 and 17,720.90

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Solution

The fourth proportional to 31,868.36, 43,977.19 and 17,720.90 is: 24,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,868.36 : 43,977.19 = 17,720.90 : x
  2. Step 2: Convert to fraction form
    31,868.36/43,977.19 = 17,720.90/x
  3. Step 3: Cross multiply
    31,868.36x = 43,977.19 × 17,720.90
  4. Step 4: Simplify right side
    31,868.36x = 779,315,386.27
  5. Step 5: Solve for x
    x = 779,315,386.27/31,868.36
  6. Step 6: Final answer
    x = 24,454.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.