Home / 15,257.52-21,055.08-8,451.36

Finding the Fourth Proportional to 15,257.52, 21,055.08 and 8,451.36

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Solution

The fourth proportional to 15,257.52, 21,055.08 and 8,451.36 is: 11,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,257.52 : 21,055.08 = 8,451.36 : x
  2. Step 2: Convert to fraction form
    15,257.52/21,055.08 = 8,451.36/x
  3. Step 3: Cross multiply
    15,257.52x = 21,055.08 × 8,451.36
  4. Step 4: Simplify right side
    15,257.52x = 177,944,060.91
  5. Step 5: Solve for x
    x = 177,944,060.91/15,257.52
  6. Step 6: Final answer
    x = 11,662.71

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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.