Home / 21,190.47-29,242.58-11,758.83

Finding the Fourth Proportional to 21,190.47, 29,242.58 and 11,758.83

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Solution

The fourth proportional to 21,190.47, 29,242.58 and 11,758.83 is: 16,227.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.47 : 29,242.58 = 11,758.83 : x
  2. Step 2: Convert to fraction form
    21,190.47/29,242.58 = 11,758.83/x
  3. Step 3: Cross multiply
    21,190.47x = 29,242.58 × 11,758.83
  4. Step 4: Simplify right side
    21,190.47x = 343,858,468.19
  5. Step 5: Solve for x
    x = 343,858,468.19/21,190.47
  6. Step 6: Final answer
    x = 16,227.03

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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.