Home / 13,983.84-20,969.28-5,212.44

Finding the Fourth Proportional to 13,983.84, 20,969.28 and 5,212.44

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Solution

The fourth proportional to 13,983.84, 20,969.28 and 5,212.44 is: 7,816.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,983.84 : 20,969.28 = 5,212.44 : x
  2. Step 2: Convert to fraction form
    13,983.84/20,969.28 = 5,212.44/x
  3. Step 3: Cross multiply
    13,983.84x = 20,969.28 × 5,212.44
  4. Step 4: Simplify right side
    13,983.84x = 109,301,113.84
  5. Step 5: Solve for x
    x = 109,301,113.84/13,983.84
  6. Step 6: Final answer
    x = 7,816.24

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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.