Home / 12,151.82-16,768.50-7,115.36

Finding the Fourth Proportional to 12,151.82, 16,768.50 and 7,115.36

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Solution

The fourth proportional to 12,151.82, 16,768.50 and 7,115.36 is: 9,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,151.82 : 16,768.50 = 7,115.36 : x
  2. Step 2: Convert to fraction form
    12,151.82/16,768.50 = 7,115.36/x
  3. Step 3: Cross multiply
    12,151.82x = 16,768.50 × 7,115.36
  4. Step 4: Simplify right side
    12,151.82x = 119,313,914.16
  5. Step 5: Solve for x
    x = 119,313,914.16/12,151.82
  6. Step 6: Final answer
    x = 9,818.60

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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.