Home / 21,200.88-29,255.73-11,768.70

Finding the Fourth Proportional to 21,200.88, 29,255.73 and 11,768.70

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Solution

The fourth proportional to 21,200.88, 29,255.73 and 11,768.70 is: 16,239.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.88 : 29,255.73 = 11,768.70 : x
  2. Step 2: Convert to fraction form
    21,200.88/29,255.73 = 11,768.70/x
  3. Step 3: Cross multiply
    21,200.88x = 29,255.73 × 11,768.70
  4. Step 4: Simplify right side
    21,200.88x = 344,301,909.65
  5. Step 5: Solve for x
    x = 344,301,909.65/21,200.88
  6. Step 6: Final answer
    x = 16,239.98

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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.