Home / 15,519.52-21,417.42-8,805.43

Finding the Fourth Proportional to 15,519.52, 21,417.42 and 8,805.43

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Solution

The fourth proportional to 15,519.52, 21,417.42 and 8,805.43 is: 12,151.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.52 : 21,417.42 = 8,805.43 : x
  2. Step 2: Convert to fraction form
    15,519.52/21,417.42 = 8,805.43/x
  3. Step 3: Cross multiply
    15,519.52x = 21,417.42 × 8,805.43
  4. Step 4: Simplify right side
    15,519.52x = 188,589,539.05
  5. Step 5: Solve for x
    x = 188,589,539.05/15,519.52
  6. Step 6: Final answer
    x = 12,151.77

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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.