Home / 21,313.13-29,412.11-11,881.69

Finding the Fourth Proportional to 21,313.13, 29,412.11 and 11,881.69

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Solution

The fourth proportional to 21,313.13, 29,412.11 and 11,881.69 is: 16,396.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.13 : 29,412.11 = 11,881.69 : x
  2. Step 2: Convert to fraction form
    21,313.13/29,412.11 = 11,881.69/x
  3. Step 3: Cross multiply
    21,313.13x = 29,412.11 × 11,881.69
  4. Step 4: Simplify right side
    21,313.13x = 349,465,529.44
  5. Step 5: Solve for x
    x = 349,465,529.44/21,313.13
  6. Step 6: Final answer
    x = 16,396.73

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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.