Home / 15,338.82-21,178.08-11,747.46

Finding the Fourth Proportional to 15,338.82, 21,178.08 and 11,747.46

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Solution

The fourth proportional to 15,338.82, 21,178.08 and 11,747.46 is: 16,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.82 : 21,178.08 = 11,747.46 : x
  2. Step 2: Convert to fraction form
    15,338.82/21,178.08 = 11,747.46/x
  3. Step 3: Cross multiply
    15,338.82x = 21,178.08 × 11,747.46
  4. Step 4: Simplify right side
    15,338.82x = 248,788,647.68
  5. Step 5: Solve for x
    x = 248,788,647.68/15,338.82
  6. Step 6: Final answer
    x = 16,219.54

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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.