Home / 31,289.50-43,179.51-18,717.22

Finding the Fourth Proportional to 31,289.50, 43,179.51 and 18,717.22

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Solution

The fourth proportional to 31,289.50, 43,179.51 and 18,717.22 is: 25,829.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.50 : 43,179.51 = 18,717.22 : x
  2. Step 2: Convert to fraction form
    31,289.50/43,179.51 = 18,717.22/x
  3. Step 3: Cross multiply
    31,289.50x = 43,179.51 × 18,717.22
  4. Step 4: Simplify right side
    31,289.50x = 808,200,388.16
  5. Step 5: Solve for x
    x = 808,200,388.16/31,289.50
  6. Step 6: Final answer
    x = 25,829.76

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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.