Home / 39,162.63-54,042.87-21,257.18

Finding the Fourth Proportional to 39,162.63, 54,042.87 and 21,257.18

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Solution

The fourth proportional to 39,162.63, 54,042.87 and 21,257.18 is: 29,334.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,162.63 : 54,042.87 = 21,257.18 : x
  2. Step 2: Convert to fraction form
    39,162.63/54,042.87 = 21,257.18/x
  3. Step 3: Cross multiply
    39,162.63x = 54,042.87 × 21,257.18
  4. Step 4: Simplify right side
    39,162.63x = 1,148,798,745.09
  5. Step 5: Solve for x
    x = 1,148,798,745.09/39,162.63
  6. Step 6: Final answer
    x = 29,334.06

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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.