Home / 15,296.86-21,108.42-8,581.58

Finding the Fourth Proportional to 15,296.86, 21,108.42 and 8,581.58

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Solution

The fourth proportional to 15,296.86, 21,108.42 and 8,581.58 is: 11,841.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.86 : 21,108.42 = 8,581.58 : x
  2. Step 2: Convert to fraction form
    15,296.86/21,108.42 = 8,581.58/x
  3. Step 3: Cross multiply
    15,296.86x = 21,108.42 × 8,581.58
  4. Step 4: Simplify right side
    15,296.86x = 181,143,594.90
  5. Step 5: Solve for x
    x = 181,143,594.90/15,296.86
  6. Step 6: Final answer
    x = 11,841.88

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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.