Home / 31,415.24-43,359.33-18,665.97

Finding the Fourth Proportional to 31,415.24, 43,359.33 and 18,665.97

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Solution

The fourth proportional to 31,415.24, 43,359.33 and 18,665.97 is: 25,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.24 : 43,359.33 = 18,665.97 : x
  2. Step 2: Convert to fraction form
    31,415.24/43,359.33 = 18,665.97/x
  3. Step 3: Cross multiply
    31,415.24x = 43,359.33 × 18,665.97
  4. Step 4: Simplify right side
    31,415.24x = 809,343,953.00
  5. Step 5: Solve for x
    x = 809,343,953.00/31,415.24
  6. Step 6: Final answer
    x = 25,762.78

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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.