Home / 63,138.29-94,708.31-21,018.49

Finding the Fourth Proportional to 63,138.29, 94,708.31 and 21,018.49

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Solution

The fourth proportional to 63,138.29, 94,708.31 and 21,018.49 is: 31,528.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,138.29 : 94,708.31 = 21,018.49 : x
  2. Step 2: Convert to fraction form
    63,138.29/94,708.31 = 21,018.49/x
  3. Step 3: Cross multiply
    63,138.29x = 94,708.31 × 21,018.49
  4. Step 4: Simplify right side
    63,138.29x = 1,990,625,324.79
  5. Step 5: Solve for x
    x = 1,990,625,324.79/63,138.29
  6. Step 6: Final answer
    x = 31,528.02

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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.