Home / 21,416.96-29,555.46-11,985.53

Finding the Fourth Proportional to 21,416.96, 29,555.46 and 11,985.53

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Solution

The fourth proportional to 21,416.96, 29,555.46 and 11,985.53 is: 16,540.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.96 : 29,555.46 = 11,985.53 : x
  2. Step 2: Convert to fraction form
    21,416.96/29,555.46 = 11,985.53/x
  3. Step 3: Cross multiply
    21,416.96x = 29,555.46 × 11,985.53
  4. Step 4: Simplify right side
    21,416.96x = 354,237,704.72
  5. Step 5: Solve for x
    x = 354,237,704.72/21,416.96
  6. Step 6: Final answer
    x = 16,540.06

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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.