Home / 31,665.68-43,712.64-18,923.36

Finding the Fourth Proportional to 31,665.68, 43,712.64 and 18,923.36

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Solution

The fourth proportional to 31,665.68, 43,712.64 and 18,923.36 is: 26,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,665.68 : 43,712.64 = 18,923.36 : x
  2. Step 2: Convert to fraction form
    31,665.68/43,712.64 = 18,923.36/x
  3. Step 3: Cross multiply
    31,665.68x = 43,712.64 × 18,923.36
  4. Step 4: Simplify right side
    31,665.68x = 827,190,023.27
  5. Step 5: Solve for x
    x = 827,190,023.27/31,665.68
  6. Step 6: Final answer
    x = 26,122.60

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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.