Home / 31,648.98-43,679.91-18,219.90

Finding the Fourth Proportional to 31,648.98, 43,679.91 and 18,219.90

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Solution

The fourth proportional to 31,648.98, 43,679.91 and 18,219.90 is: 25,145.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,648.98 : 43,679.91 = 18,219.90 : x
  2. Step 2: Convert to fraction form
    31,648.98/43,679.91 = 18,219.90/x
  3. Step 3: Cross multiply
    31,648.98x = 43,679.91 × 18,219.90
  4. Step 4: Simplify right side
    31,648.98x = 795,843,592.21
  5. Step 5: Solve for x
    x = 795,843,592.21/31,648.98
  6. Step 6: Final answer
    x = 25,145.95

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1.5x scale

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.