Home / 10,387.20-14,334.28-6,408.30

Finding the Fourth Proportional to 10,387.20, 14,334.28 and 6,408.30

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Solution

The fourth proportional to 10,387.20, 14,334.28 and 6,408.30 is: 8,843.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.20 : 14,334.28 = 6,408.30 : x
  2. Step 2: Convert to fraction form
    10,387.20/14,334.28 = 6,408.30/x
  3. Step 3: Cross multiply
    10,387.20x = 14,334.28 × 6,408.30
  4. Step 4: Simplify right side
    10,387.20x = 91,858,366.52
  5. Step 5: Solve for x
    x = 91,858,366.52/10,387.20
  6. Step 6: Final answer
    x = 8,843.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.