Home / 13,988.81-20,983.22-5,224.41

Finding the Fourth Proportional to 13,988.81, 20,983.22 and 5,224.41

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Solution

The fourth proportional to 13,988.81, 20,983.22 and 5,224.41 is: 7,836.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.81 : 20,983.22 = 5,224.41 : x
  2. Step 2: Convert to fraction form
    13,988.81/20,983.22 = 5,224.41/x
  3. Step 3: Cross multiply
    13,988.81x = 20,983.22 × 5,224.41
  4. Step 4: Simplify right side
    13,988.81x = 109,624,918.28
  5. Step 5: Solve for x
    x = 109,624,918.28/13,988.81
  6. Step 6: Final answer
    x = 7,836.61

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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.