Home / 21,554.96-29,745.56-12,123.53

Finding the Fourth Proportional to 21,554.96, 29,745.56 and 12,123.53

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Solution

The fourth proportional to 21,554.96, 29,745.56 and 12,123.53 is: 16,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.96 : 29,745.56 = 12,123.53 : x
  2. Step 2: Convert to fraction form
    21,554.96/29,745.56 = 12,123.53/x
  3. Step 3: Cross multiply
    21,554.96x = 29,745.56 × 12,123.53
  4. Step 4: Simplify right side
    21,554.96x = 360,621,070.61
  5. Step 5: Solve for x
    x = 360,621,070.61/21,554.96
  6. Step 6: Final answer
    x = 16,730.30

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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.