Home / 21,401.92-29,532.36-11,969.20

Finding the Fourth Proportional to 21,401.92, 29,532.36 and 11,969.20

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Solution

The fourth proportional to 21,401.92, 29,532.36 and 11,969.20 is: 16,516.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.92 : 29,532.36 = 11,969.20 : x
  2. Step 2: Convert to fraction form
    21,401.92/29,532.36 = 11,969.20/x
  3. Step 3: Cross multiply
    21,401.92x = 29,532.36 × 11,969.20
  4. Step 4: Simplify right side
    21,401.92x = 353,478,723.31
  5. Step 5: Solve for x
    x = 353,478,723.31/21,401.92
  6. Step 6: Final answer
    x = 16,516.22

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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.