Home / 21,118.56-29,138.67-14,418.14

Finding the Fourth Proportional to 21,118.56, 29,138.67 and 14,418.14

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Solution

The fourth proportional to 21,118.56, 29,138.67 and 14,418.14 is: 19,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.56 : 29,138.67 = 14,418.14 : x
  2. Step 2: Convert to fraction form
    21,118.56/29,138.67 = 14,418.14/x
  3. Step 3: Cross multiply
    21,118.56x = 29,138.67 × 14,418.14
  4. Step 4: Simplify right side
    21,118.56x = 420,125,277.78
  5. Step 5: Solve for x
    x = 420,125,277.78/21,118.56
  6. Step 6: Final answer
    x = 19,893.66

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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.