Home / 21,427.36-29,559.94-13,876.12

Finding the Fourth Proportional to 21,427.36, 29,559.94 and 13,876.12

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Solution

The fourth proportional to 21,427.36, 29,559.94 and 13,876.12 is: 19,142.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.36 : 29,559.94 = 13,876.12 : x
  2. Step 2: Convert to fraction form
    21,427.36/29,559.94 = 13,876.12/x
  3. Step 3: Cross multiply
    21,427.36x = 29,559.94 × 13,876.12
  4. Step 4: Simplify right side
    21,427.36x = 410,177,274.63
  5. Step 5: Solve for x
    x = 410,177,274.63/21,427.36
  6. Step 6: Final answer
    x = 19,142.69

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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.