Home / 21,047.25-29,018.94-13,481.14

Finding the Fourth Proportional to 21,047.25, 29,018.94 and 13,481.14

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Solution

The fourth proportional to 21,047.25, 29,018.94 and 13,481.14 is: 18,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.25 : 29,018.94 = 13,481.14 : x
  2. Step 2: Convert to fraction form
    21,047.25/29,018.94 = 13,481.14/x
  3. Step 3: Cross multiply
    21,047.25x = 29,018.94 × 13,481.14
  4. Step 4: Simplify right side
    21,047.25x = 391,208,392.79
  5. Step 5: Solve for x
    x = 391,208,392.79/21,047.25
  6. Step 6: Final answer
    x = 18,587.15

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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.