Home / 31,867.78-43,977.30-17,720.50

Finding the Fourth Proportional to 31,867.78, 43,977.30 and 17,720.50

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Solution

The fourth proportional to 31,867.78, 43,977.30 and 17,720.50 is: 24,454.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,867.78 : 43,977.30 = 17,720.50 : x
  2. Step 2: Convert to fraction form
    31,867.78/43,977.30 = 17,720.50/x
  3. Step 3: Cross multiply
    31,867.78x = 43,977.30 × 17,720.50
  4. Step 4: Simplify right side
    31,867.78x = 779,299,744.65
  5. Step 5: Solve for x
    x = 779,299,744.65/31,867.78
  6. Step 6: Final answer
    x = 24,454.16

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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.