Home / 20,995.61-28,977.72-12,046.08

Finding the Fourth Proportional to 20,995.61, 28,977.72 and 12,046.08

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Solution

The fourth proportional to 20,995.61, 28,977.72 and 12,046.08 is: 16,625.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.61 : 28,977.72 = 12,046.08 : x
  2. Step 2: Convert to fraction form
    20,995.61/28,977.72 = 12,046.08/x
  3. Step 3: Cross multiply
    20,995.61x = 28,977.72 × 12,046.08
  4. Step 4: Simplify right side
    20,995.61x = 349,067,933.34
  5. Step 5: Solve for x
    x = 349,067,933.34/20,995.61
  6. Step 6: Final answer
    x = 16,625.76

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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.