Home / 21,341.22-29,453.67-11,911.74

Finding the Fourth Proportional to 21,341.22, 29,453.67 and 11,911.74

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Solution

The fourth proportional to 21,341.22, 29,453.67 and 11,911.74 is: 16,439.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.22 : 29,453.67 = 11,911.74 : x
  2. Step 2: Convert to fraction form
    21,341.22/29,453.67 = 11,911.74/x
  3. Step 3: Cross multiply
    21,341.22x = 29,453.67 × 11,911.74
  4. Step 4: Simplify right side
    21,341.22x = 350,844,459.09
  5. Step 5: Solve for x
    x = 350,844,459.09/21,341.22
  6. Step 6: Final answer
    x = 16,439.76

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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.