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Finding the Fourth Proportional to 21,114.98, 29,125.98 and 13,944.96

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Solution

The fourth proportional to 21,114.98, 29,125.98 and 13,944.96 is: 19,235.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.98 : 29,125.98 = 13,944.96 : x
  2. Step 2: Convert to fraction form
    21,114.98/29,125.98 = 13,944.96/x
  3. Step 3: Cross multiply
    21,114.98x = 29,125.98 × 13,944.96
  4. Step 4: Simplify right side
    21,114.98x = 406,160,626.06
  5. Step 5: Solve for x
    x = 406,160,626.06/21,114.98
  6. Step 6: Final answer
    x = 19,235.66

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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.