Home / 15,741.21-21,724.40-11,755.40

Finding the Fourth Proportional to 15,741.21, 21,724.40 and 11,755.40

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Solution

The fourth proportional to 15,741.21, 21,724.40 and 11,755.40 is: 16,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.21 : 21,724.40 = 11,755.40 : x
  2. Step 2: Convert to fraction form
    15,741.21/21,724.40 = 11,755.40/x
  3. Step 3: Cross multiply
    15,741.21x = 21,724.40 × 11,755.40
  4. Step 4: Simplify right side
    15,741.21x = 255,379,076.77
  5. Step 5: Solve for x
    x = 255,379,076.77/15,741.21
  6. Step 6: Final answer
    x = 16,223.60

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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.