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Finding the Fourth Proportional to 21,401.48, 29,533.48 and 11,841.12

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Solution

The fourth proportional to 21,401.48, 29,533.48 and 11,841.12 is: 16,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.48 : 29,533.48 = 11,841.12 : x
  2. Step 2: Convert to fraction form
    21,401.48/29,533.48 = 11,841.12/x
  3. Step 3: Cross multiply
    21,401.48x = 29,533.48 × 11,841.12
  4. Step 4: Simplify right side
    21,401.48x = 349,709,451.09
  5. Step 5: Solve for x
    x = 349,709,451.09/21,401.48
  6. Step 6: Final answer
    x = 16,340.43

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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.