Home / 12,780.37-19,170.56-11,950.22

Finding the Fourth Proportional to 12,780.37, 19,170.56 and 11,950.22

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Solution

The fourth proportional to 12,780.37, 19,170.56 and 11,950.22 is: 17,925.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.37 : 19,170.56 = 11,950.22 : x
  2. Step 2: Convert to fraction form
    12,780.37/19,170.56 = 11,950.22/x
  3. Step 3: Cross multiply
    12,780.37x = 19,170.56 × 11,950.22
  4. Step 4: Simplify right side
    12,780.37x = 229,092,409.52
  5. Step 5: Solve for x
    x = 229,092,409.52/12,780.37
  6. Step 6: Final answer
    x = 17,925.33

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.