Home / 21,554.56-29,745.30-12,123.13

Finding the Fourth Proportional to 21,554.56, 29,745.30 and 12,123.13

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Solution

The fourth proportional to 21,554.56, 29,745.30 and 12,123.13 is: 16,729.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.56 : 29,745.30 = 12,123.13 : x
  2. Step 2: Convert to fraction form
    21,554.56/29,745.30 = 12,123.13/x
  3. Step 3: Cross multiply
    21,554.56x = 29,745.30 × 12,123.13
  4. Step 4: Simplify right side
    21,554.56x = 360,606,138.79
  5. Step 5: Solve for x
    x = 360,606,138.79/21,554.56
  6. Step 6: Final answer
    x = 16,729.92

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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.