Home / 21,188.49-29,240.78-11,757.93

Finding the Fourth Proportional to 21,188.49, 29,240.78 and 11,757.93

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Solution

The fourth proportional to 21,188.49, 29,240.78 and 11,757.93 is: 16,226.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.49 : 29,240.78 = 11,757.93 : x
  2. Step 2: Convert to fraction form
    21,188.49/29,240.78 = 11,757.93/x
  3. Step 3: Cross multiply
    21,188.49x = 29,240.78 × 11,757.93
  4. Step 4: Simplify right side
    21,188.49x = 343,810,985.60
  5. Step 5: Solve for x
    x = 343,810,985.60/21,188.49
  6. Step 6: Final answer
    x = 16,226.31

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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.