Home / 13,972.80-19,282.96-8,003.21

Finding the Fourth Proportional to 13,972.80, 19,282.96 and 8,003.21

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Solution

The fourth proportional to 13,972.80, 19,282.96 and 8,003.21 is: 11,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.80 : 19,282.96 = 8,003.21 : x
  2. Step 2: Convert to fraction form
    13,972.80/19,282.96 = 8,003.21/x
  3. Step 3: Cross multiply
    13,972.80x = 19,282.96 × 8,003.21
  4. Step 4: Simplify right side
    13,972.80x = 154,325,491.89
  5. Step 5: Solve for x
    x = 154,325,491.89/13,972.80
  6. Step 6: Final answer
    x = 11,044.70

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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.