Home / 13,984.07-20,979.77-5,219.06

Finding the Fourth Proportional to 13,984.07, 20,979.77 and 5,219.06

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Solution

The fourth proportional to 13,984.07, 20,979.77 and 5,219.06 is: 7,829.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.07 : 20,979.77 = 5,219.06 : x
  2. Step 2: Convert to fraction form
    13,984.07/20,979.77 = 5,219.06/x
  3. Step 3: Cross multiply
    13,984.07x = 20,979.77 × 5,219.06
  4. Step 4: Simplify right side
    13,984.07x = 109,494,704.77
  5. Step 5: Solve for x
    x = 109,494,704.77/13,984.07
  6. Step 6: Final answer
    x = 7,829.96

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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.