Home / 15,299.20-21,111.60-8,584.30

Finding the Fourth Proportional to 15,299.20, 21,111.60 and 8,584.30

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Solution

The fourth proportional to 15,299.20, 21,111.60 and 8,584.30 is: 11,845.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.20 : 21,111.60 = 8,584.30 : x
  2. Step 2: Convert to fraction form
    15,299.20/21,111.60 = 8,584.30/x
  3. Step 3: Cross multiply
    15,299.20x = 21,111.60 × 8,584.30
  4. Step 4: Simplify right side
    15,299.20x = 181,228,307.88
  5. Step 5: Solve for x
    x = 181,228,307.88/15,299.20
  6. Step 6: Final answer
    x = 11,845.61

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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.