Home / 31,289.65-43,179.78-17,142.46

Finding the Fourth Proportional to 31,289.65, 43,179.78 and 17,142.46

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Solution

The fourth proportional to 31,289.65, 43,179.78 and 17,142.46 is: 23,656.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.65 : 43,179.78 = 17,142.46 : x
  2. Step 2: Convert to fraction form
    31,289.65/43,179.78 = 17,142.46/x
  3. Step 3: Cross multiply
    31,289.65x = 43,179.78 × 17,142.46
  4. Step 4: Simplify right side
    31,289.65x = 740,207,651.46
  5. Step 5: Solve for x
    x = 740,207,651.46/31,289.65
  6. Step 6: Final answer
    x = 23,656.63

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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.