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Finding the Fourth Proportional to 19,943.60, 29,850.60 and 14,111.60

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Solution

The fourth proportional to 19,943.60, 29,850.60 and 14,111.60 is: 21,121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.60 : 29,850.60 = 14,111.60 : x
  2. Step 2: Convert to fraction form
    19,943.60/29,850.60 = 14,111.60/x
  3. Step 3: Cross multiply
    19,943.60x = 29,850.60 × 14,111.60
  4. Step 4: Simplify right side
    19,943.60x = 421,239,726.96
  5. Step 5: Solve for x
    x = 421,239,726.96/19,943.60
  6. Step 6: Final answer
    x = 21,121.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.