Home / 28,129.66-38,822.79-16,949.50

Finding the Fourth Proportional to 28,129.66, 38,822.79 and 16,949.50

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Solution

The fourth proportional to 28,129.66, 38,822.79 and 16,949.50 is: 23,392.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.66 : 38,822.79 = 16,949.50 : x
  2. Step 2: Convert to fraction form
    28,129.66/38,822.79 = 16,949.50/x
  3. Step 3: Cross multiply
    28,129.66x = 38,822.79 × 16,949.50
  4. Step 4: Simplify right side
    28,129.66x = 658,026,879.11
  5. Step 5: Solve for x
    x = 658,026,879.11/28,129.66
  6. Step 6: Final answer
    x = 23,392.64

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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.