Home / 13,388.84-20,057.34-6,468.20

Finding the Fourth Proportional to 13,388.84, 20,057.34 and 6,468.20

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Solution

The fourth proportional to 13,388.84, 20,057.34 and 6,468.20 is: 9,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.84 : 20,057.34 = 6,468.20 : x
  2. Step 2: Convert to fraction form
    13,388.84/20,057.34 = 6,468.20/x
  3. Step 3: Cross multiply
    13,388.84x = 20,057.34 × 6,468.20
  4. Step 4: Simplify right side
    13,388.84x = 129,734,886.59
  5. Step 5: Solve for x
    x = 129,734,886.59/13,388.84
  6. Step 6: Final answer
    x = 9,689.78

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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.