Home / 15,150.98-20,908.73-8,436.42

Finding the Fourth Proportional to 15,150.98, 20,908.73 and 8,436.42

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Solution

The fourth proportional to 15,150.98, 20,908.73 and 8,436.42 is: 11,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.98 : 20,908.73 = 8,436.42 : x
  2. Step 2: Convert to fraction form
    15,150.98/20,908.73 = 8,436.42/x
  3. Step 3: Cross multiply
    15,150.98x = 20,908.73 × 8,436.42
  4. Step 4: Simplify right side
    15,150.98x = 176,394,849.04
  5. Step 5: Solve for x
    x = 176,394,849.04/15,150.98
  6. Step 6: Final answer
    x = 11,642.47

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Half scale
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Double scale
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Similar ratio
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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.