Home / 21,055.82-29,061.92-13,887.03

Finding the Fourth Proportional to 21,055.82, 29,061.92 and 13,887.03

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Solution

The fourth proportional to 21,055.82, 29,061.92 and 13,887.03 is: 19,167.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.82 : 29,061.92 = 13,887.03 : x
  2. Step 2: Convert to fraction form
    21,055.82/29,061.92 = 13,887.03/x
  3. Step 3: Cross multiply
    21,055.82x = 29,061.92 × 13,887.03
  4. Step 4: Simplify right side
    21,055.82x = 403,583,685.46
  5. Step 5: Solve for x
    x = 403,583,685.46/21,055.82
  6. Step 6: Final answer
    x = 19,167.33

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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.