Home / 13,990.36-20,984.86-5,224.60

Finding the Fourth Proportional to 13,990.36, 20,984.86 and 5,224.60

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Solution

The fourth proportional to 13,990.36, 20,984.86 and 5,224.60 is: 7,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.36 : 20,984.86 = 5,224.60 : x
  2. Step 2: Convert to fraction form
    13,990.36/20,984.86 = 5,224.60/x
  3. Step 3: Cross multiply
    13,990.36x = 20,984.86 × 5,224.60
  4. Step 4: Simplify right side
    13,990.36x = 109,637,499.56
  5. Step 5: Solve for x
    x = 109,637,499.56/13,990.36
  6. Step 6: Final answer
    x = 7,836.65

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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.