Home / 38,665.89-57,986.51-12,364.47

Finding the Fourth Proportional to 38,665.89, 57,986.51 and 12,364.47

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Solution

The fourth proportional to 38,665.89, 57,986.51 and 12,364.47 is: 18,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,665.89 : 57,986.51 = 12,364.47 : x
  2. Step 2: Convert to fraction form
    38,665.89/57,986.51 = 12,364.47/x
  3. Step 3: Cross multiply
    38,665.89x = 57,986.51 × 12,364.47
  4. Step 4: Simplify right side
    38,665.89x = 716,972,401.48
  5. Step 5: Solve for x
    x = 716,972,401.48/38,665.89
  6. Step 6: Final answer
    x = 18,542.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.