Home / 21,020.26-29,009.99-13,371.57

Finding the Fourth Proportional to 21,020.26, 29,009.99 and 13,371.57

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Solution

The fourth proportional to 21,020.26, 29,009.99 and 13,371.57 is: 18,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.26 : 29,009.99 = 13,371.57 : x
  2. Step 2: Convert to fraction form
    21,020.26/29,009.99 = 13,371.57/x
  3. Step 3: Cross multiply
    21,020.26x = 29,009.99 × 13,371.57
  4. Step 4: Simplify right side
    21,020.26x = 387,909,111.98
  5. Step 5: Solve for x
    x = 387,909,111.98/21,020.26
  6. Step 6: Final answer
    x = 18,454.06

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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.