Home / 13,989.11-19,304.87-8,021.30

Finding the Fourth Proportional to 13,989.11, 19,304.87 and 8,021.30

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Solution

The fourth proportional to 13,989.11, 19,304.87 and 8,021.30 is: 11,069.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.11 : 19,304.87 = 8,021.30 : x
  2. Step 2: Convert to fraction form
    13,989.11/19,304.87 = 8,021.30/x
  3. Step 3: Cross multiply
    13,989.11x = 19,304.87 × 8,021.30
  4. Step 4: Simplify right side
    13,989.11x = 154,850,017.10
  5. Step 5: Solve for x
    x = 154,850,017.10/13,989.11
  6. Step 6: Final answer
    x = 11,069.33

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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.