Home / 20,422.08-28,181.52-12,036.96

Finding the Fourth Proportional to 20,422.08, 28,181.52 and 12,036.96

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Solution

The fourth proportional to 20,422.08, 28,181.52 and 12,036.96 is: 16,610.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.08 : 28,181.52 = 12,036.96 : x
  2. Step 2: Convert to fraction form
    20,422.08/28,181.52 = 12,036.96/x
  3. Step 3: Cross multiply
    20,422.08x = 28,181.52 × 12,036.96
  4. Step 4: Simplify right side
    20,422.08x = 339,219,828.98
  5. Step 5: Solve for x
    x = 339,219,828.98/20,422.08
  6. Step 6: Final answer
    x = 16,610.44

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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.