Home / 31,340.93-43,254.30-17,912.75

Finding the Fourth Proportional to 31,340.93, 43,254.30 and 17,912.75

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Solution

The fourth proportional to 31,340.93, 43,254.30 and 17,912.75 is: 24,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,340.93 : 43,254.30 = 17,912.75 : x
  2. Step 2: Convert to fraction form
    31,340.93/43,254.30 = 17,912.75/x
  3. Step 3: Cross multiply
    31,340.93x = 43,254.30 × 17,912.75
  4. Step 4: Simplify right side
    31,340.93x = 774,803,313.23
  5. Step 5: Solve for x
    x = 774,803,313.23/31,340.93
  6. Step 6: Final answer
    x = 24,721.78

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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.