Home / 15,339.72-21,168.30-8,625.62

Finding the Fourth Proportional to 15,339.72, 21,168.30 and 8,625.62

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Solution

The fourth proportional to 15,339.72, 21,168.30 and 8,625.62 is: 11,903.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.72 : 21,168.30 = 8,625.62 : x
  2. Step 2: Convert to fraction form
    15,339.72/21,168.30 = 8,625.62/x
  3. Step 3: Cross multiply
    15,339.72x = 21,168.30 × 8,625.62
  4. Step 4: Simplify right side
    15,339.72x = 182,589,711.85
  5. Step 5: Solve for x
    x = 182,589,711.85/15,339.72
  6. Step 6: Final answer
    x = 11,903.07

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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.