Home / 31,689.94-43,724.73-18,947.26

Finding the Fourth Proportional to 31,689.94, 43,724.73 and 18,947.26

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Solution

The fourth proportional to 31,689.94, 43,724.73 and 18,947.26 is: 26,142.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.94 : 43,724.73 = 18,947.26 : x
  2. Step 2: Convert to fraction form
    31,689.94/43,724.73 = 18,947.26/x
  3. Step 3: Cross multiply
    31,689.94x = 43,724.73 × 18,947.26
  4. Step 4: Simplify right side
    31,689.94x = 828,463,827.74
  5. Step 5: Solve for x
    x = 828,463,827.74/31,689.94
  6. Step 6: Final answer
    x = 26,142.80

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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.