Home / 31,293.84-43,185.50-18,718.59

Finding the Fourth Proportional to 31,293.84, 43,185.50 and 18,718.59

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Solution

The fourth proportional to 31,293.84, 43,185.50 and 18,718.59 is: 25,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,293.84 : 43,185.50 = 18,718.59 : x
  2. Step 2: Convert to fraction form
    31,293.84/43,185.50 = 18,718.59/x
  3. Step 3: Cross multiply
    31,293.84x = 43,185.50 × 18,718.59
  4. Step 4: Simplify right side
    31,293.84x = 808,371,912.28
  5. Step 5: Solve for x
    x = 808,371,912.28/31,293.84
  6. Step 6: Final answer
    x = 25,831.66

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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.