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Finding the Fourth Proportional to 13,783.98, 20,675.98 and 5,988.54

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Solution

The fourth proportional to 13,783.98, 20,675.98 and 5,988.54 is: 8,982.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.98 : 20,675.98 = 5,988.54 : x
  2. Step 2: Convert to fraction form
    13,783.98/20,675.98 = 5,988.54/x
  3. Step 3: Cross multiply
    13,783.98x = 20,675.98 × 5,988.54
  4. Step 4: Simplify right side
    13,783.98x = 123,818,933.27
  5. Step 5: Solve for x
    x = 123,818,933.27/13,783.98
  6. Step 6: Final answer
    x = 8,982.81

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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.