Home / 23,143.71-31,939.53-15,190.59

Finding the Fourth Proportional to 23,143.71, 31,939.53 and 15,190.59

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Solution

The fourth proportional to 23,143.71, 31,939.53 and 15,190.59 is: 20,963.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,143.71 : 31,939.53 = 15,190.59 : x
  2. Step 2: Convert to fraction form
    23,143.71/31,939.53 = 15,190.59/x
  3. Step 3: Cross multiply
    23,143.71x = 31,939.53 × 15,190.59
  4. Step 4: Simplify right side
    23,143.71x = 485,180,305.02
  5. Step 5: Solve for x
    x = 485,180,305.02/23,143.71
  6. Step 6: Final answer
    x = 20,963.81

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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.