Home / 21,839.73-30,130.07-13,770.73

Finding the Fourth Proportional to 21,839.73, 30,130.07 and 13,770.73

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Solution

The fourth proportional to 21,839.73, 30,130.07 and 13,770.73 is: 18,998.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.73 : 30,130.07 = 13,770.73 : x
  2. Step 2: Convert to fraction form
    21,839.73/30,130.07 = 13,770.73/x
  3. Step 3: Cross multiply
    21,839.73x = 30,130.07 × 13,770.73
  4. Step 4: Simplify right side
    21,839.73x = 414,913,058.85
  5. Step 5: Solve for x
    x = 414,913,058.85/21,839.73
  6. Step 6: Final answer
    x = 18,998.09

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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.