Home / 31,683.87-43,718.85-18,252.50

Finding the Fourth Proportional to 31,683.87, 43,718.85 and 18,252.50

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Solution

The fourth proportional to 31,683.87, 43,718.85 and 18,252.50 is: 25,185.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,683.87 : 43,718.85 = 18,252.50 : x
  2. Step 2: Convert to fraction form
    31,683.87/43,718.85 = 18,252.50/x
  3. Step 3: Cross multiply
    31,683.87x = 43,718.85 × 18,252.50
  4. Step 4: Simplify right side
    31,683.87x = 797,978,309.63
  5. Step 5: Solve for x
    x = 797,978,309.63/31,683.87
  6. Step 6: Final answer
    x = 25,185.63

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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.