Home / 13,984.84-20,970.78-5,213.44

Finding the Fourth Proportional to 13,984.84, 20,970.78 and 5,213.44

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Solution

The fourth proportional to 13,984.84, 20,970.78 and 5,213.44 is: 7,817.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.84 : 20,970.78 = 5,213.44 : x
  2. Step 2: Convert to fraction form
    13,984.84/20,970.78 = 5,213.44/x
  3. Step 3: Cross multiply
    13,984.84x = 20,970.78 × 5,213.44
  4. Step 4: Simplify right side
    13,984.84x = 109,329,903.28
  5. Step 5: Solve for x
    x = 109,329,903.28/13,984.84
  6. Step 6: Final answer
    x = 7,817.74

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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.