Home / 39,635.16-54,695.06-21,729.77

Finding the Fourth Proportional to 39,635.16, 54,695.06 and 21,729.77

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Solution

The fourth proportional to 39,635.16, 54,695.06 and 21,729.77 is: 29,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,635.16 : 54,695.06 = 21,729.77 : x
  2. Step 2: Convert to fraction form
    39,635.16/54,695.06 = 21,729.77/x
  3. Step 3: Cross multiply
    39,635.16x = 54,695.06 × 21,729.77
  4. Step 4: Simplify right side
    39,635.16x = 1,188,511,073.94
  5. Step 5: Solve for x
    x = 1,188,511,073.94/39,635.16
  6. Step 6: Final answer
    x = 29,986.29

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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.