Home / 21,416.21-29,554.36-11,984.77

Finding the Fourth Proportional to 21,416.21, 29,554.36 and 11,984.77

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Solution

The fourth proportional to 21,416.21, 29,554.36 and 11,984.77 is: 16,538.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.21 : 29,554.36 = 11,984.77 : x
  2. Step 2: Convert to fraction form
    21,416.21/29,554.36 = 11,984.77/x
  3. Step 3: Cross multiply
    21,416.21x = 29,554.36 × 11,984.77
  4. Step 4: Simplify right side
    21,416.21x = 354,202,207.10
  5. Step 5: Solve for x
    x = 354,202,207.10/21,416.21
  6. Step 6: Final answer
    x = 16,538.98

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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.