Home / 14,575.80-20,112.78-8,288.28

Finding the Fourth Proportional to 14,575.80, 20,112.78 and 8,288.28

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Solution

The fourth proportional to 14,575.80, 20,112.78 and 8,288.28 is: 11,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,575.80 : 20,112.78 = 8,288.28 : x
  2. Step 2: Convert to fraction form
    14,575.80/20,112.78 = 8,288.28/x
  3. Step 3: Cross multiply
    14,575.80x = 20,112.78 × 8,288.28
  4. Step 4: Simplify right side
    14,575.80x = 166,700,352.22
  5. Step 5: Solve for x
    x = 166,700,352.22/14,575.80
  6. Step 6: Final answer
    x = 11,436.79

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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.