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Finding the Fourth Proportional to 19,801.98, 29,707.92 and 13,969.98

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Solution

The fourth proportional to 19,801.98, 29,707.92 and 13,969.98 is: 20,958.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,801.98 : 29,707.92 = 13,969.98 : x
  2. Step 2: Convert to fraction form
    19,801.98/29,707.92 = 13,969.98/x
  3. Step 3: Cross multiply
    19,801.98x = 29,707.92 × 13,969.98
  4. Step 4: Simplify right side
    19,801.98x = 415,019,048.24
  5. Step 5: Solve for x
    x = 415,019,048.24/19,801.98
  6. Step 6: Final answer
    x = 20,958.46

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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.