Home / 21,417.21-29,554.74-11,856.42

Finding the Fourth Proportional to 21,417.21, 29,554.74 and 11,856.42

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Solution

The fourth proportional to 21,417.21, 29,554.74 and 11,856.42 is: 16,361.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.21 : 29,554.74 = 11,856.42 : x
  2. Step 2: Convert to fraction form
    21,417.21/29,554.74 = 11,856.42/x
  3. Step 3: Cross multiply
    21,417.21x = 29,554.74 × 11,856.42
  4. Step 4: Simplify right side
    21,417.21x = 350,413,410.43
  5. Step 5: Solve for x
    x = 350,413,410.43/21,417.21
  6. Step 6: Final answer
    x = 16,361.30

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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.