Home / 21,556.80-29,747.66-12,123.54

Finding the Fourth Proportional to 21,556.80, 29,747.66 and 12,123.54

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Solution

The fourth proportional to 21,556.80, 29,747.66 and 12,123.54 is: 16,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.80 : 29,747.66 = 12,123.54 : x
  2. Step 2: Convert to fraction form
    21,556.80/29,747.66 = 12,123.54/x
  3. Step 3: Cross multiply
    21,556.80x = 29,747.66 × 12,123.54
  4. Step 4: Simplify right side
    21,556.80x = 360,646,885.30
  5. Step 5: Solve for x
    x = 360,646,885.30/21,556.80
  6. Step 6: Final answer
    x = 16,730.08

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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.