Home / 39,971.72-55,142.70-23,195

Finding the Fourth Proportional to 39,971.72, 55,142.70 and 23,195

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Solution

The fourth proportional to 39,971.72, 55,142.70 and 23,195 is: 31,998.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,971.72 : 55,142.70 = 23,195 : x
  2. Step 2: Convert to fraction form
    39,971.72/55,142.70 = 23,195/x
  3. Step 3: Cross multiply
    39,971.72x = 55,142.70 × 23,195
  4. Step 4: Simplify right side
    39,971.72x = 1,279,034,926.50
  5. Step 5: Solve for x
    x = 1,279,034,926.50/39,971.72
  6. Step 6: Final answer
    x = 31,998.50

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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.