Home / 21,199.47-29,255.15-11,768.01

Finding the Fourth Proportional to 21,199.47, 29,255.15 and 11,768.01

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Solution

The fourth proportional to 21,199.47, 29,255.15 and 11,768.01 is: 16,239.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.47 : 29,255.15 = 11,768.01 : x
  2. Step 2: Convert to fraction form
    21,199.47/29,255.15 = 11,768.01/x
  3. Step 3: Cross multiply
    21,199.47x = 29,255.15 × 11,768.01
  4. Step 4: Simplify right side
    21,199.47x = 344,274,838.91
  5. Step 5: Solve for x
    x = 344,274,838.91/21,199.47
  6. Step 6: Final answer
    x = 16,239.79

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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.