Home / 10,685.20-14,745.36-6,494.80

Finding the Fourth Proportional to 10,685.20, 14,745.36 and 6,494.80

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Solution

The fourth proportional to 10,685.20, 14,745.36 and 6,494.80 is: 8,962.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,685.20 : 14,745.36 = 6,494.80 : x
  2. Step 2: Convert to fraction form
    10,685.20/14,745.36 = 6,494.80/x
  3. Step 3: Cross multiply
    10,685.20x = 14,745.36 × 6,494.80
  4. Step 4: Simplify right side
    10,685.20x = 95,768,164.13
  5. Step 5: Solve for x
    x = 95,768,164.13/10,685.20
  6. Step 6: Final answer
    x = 8,962.69

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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.