Home / 15,169.36-20,933.67-8,454.91

Finding the Fourth Proportional to 15,169.36, 20,933.67 and 8,454.91

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Solution

The fourth proportional to 15,169.36, 20,933.67 and 8,454.91 is: 11,667.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,169.36 : 20,933.67 = 8,454.91 : x
  2. Step 2: Convert to fraction form
    15,169.36/20,933.67 = 8,454.91/x
  3. Step 3: Cross multiply
    15,169.36x = 20,933.67 × 8,454.91
  4. Step 4: Simplify right side
    15,169.36x = 176,992,295.82
  5. Step 5: Solve for x
    x = 176,992,295.82/15,169.36
  6. Step 6: Final answer
    x = 11,667.75

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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.