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Finding the Fourth Proportional to 21,048.74, 29,047.12 and 11,617.31

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Solution

The fourth proportional to 21,048.74, 29,047.12 and 11,617.31 is: 16,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048.74 : 29,047.12 = 11,617.31 : x
  2. Step 2: Convert to fraction form
    21,048.74/29,047.12 = 11,617.31/x
  3. Step 3: Cross multiply
    21,048.74x = 29,047.12 × 11,617.31
  4. Step 4: Simplify right side
    21,048.74x = 337,449,194.33
  5. Step 5: Solve for x
    x = 337,449,194.33/21,048.74
  6. Step 6: Final answer
    x = 16,031.80

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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.