Home / 21,054.42-29,054.85-11,622.78

Finding the Fourth Proportional to 21,054.42, 29,054.85 and 11,622.78

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Solution

The fourth proportional to 21,054.42, 29,054.85 and 11,622.78 is: 16,039.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.42 : 29,054.85 = 11,622.78 : x
  2. Step 2: Convert to fraction form
    21,054.42/29,054.85 = 11,622.78/x
  3. Step 3: Cross multiply
    21,054.42x = 29,054.85 × 11,622.78
  4. Step 4: Simplify right side
    21,054.42x = 337,698,129.48
  5. Step 5: Solve for x
    x = 337,698,129.48/21,054.42
  6. Step 6: Final answer
    x = 16,039.30

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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.