Home / 21,401.92-29,534.16-11,971.36

Finding the Fourth Proportional to 21,401.92, 29,534.16 and 11,971.36

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Solution

The fourth proportional to 21,401.92, 29,534.16 and 11,971.36 is: 16,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.92 : 29,534.16 = 11,971.36 : x
  2. Step 2: Convert to fraction form
    21,401.92/29,534.16 = 11,971.36/x
  3. Step 3: Cross multiply
    21,401.92x = 29,534.16 × 11,971.36
  4. Step 4: Simplify right side
    21,401.92x = 353,564,061.66
  5. Step 5: Solve for x
    x = 353,564,061.66/21,401.92
  6. Step 6: Final answer
    x = 16,520.20

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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.