Home / 13,984.94-20,977.47-5,665.12

Finding the Fourth Proportional to 13,984.94, 20,977.47 and 5,665.12

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Solution

The fourth proportional to 13,984.94, 20,977.47 and 5,665.12 is: 8,497.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.94 : 20,977.47 = 5,665.12 : x
  2. Step 2: Convert to fraction form
    13,984.94/20,977.47 = 5,665.12/x
  3. Step 3: Cross multiply
    13,984.94x = 20,977.47 × 5,665.12
  4. Step 4: Simplify right side
    13,984.94x = 118,839,858.70
  5. Step 5: Solve for x
    x = 118,839,858.70/13,984.94
  6. Step 6: Final answer
    x = 8,497.70

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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.