Home / 31,727.90-43,783.28-18,301.55

Finding the Fourth Proportional to 31,727.90, 43,783.28 and 18,301.55

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Solution

The fourth proportional to 31,727.90, 43,783.28 and 18,301.55 is: 25,255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,727.90 : 43,783.28 = 18,301.55 : x
  2. Step 2: Convert to fraction form
    31,727.90/43,783.28 = 18,301.55/x
  3. Step 3: Cross multiply
    31,727.90x = 43,783.28 × 18,301.55
  4. Step 4: Simplify right side
    31,727.90x = 801,301,749.24
  5. Step 5: Solve for x
    x = 801,301,749.24/31,727.90
  6. Step 6: Final answer
    x = 25,255.43

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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.