Home / 10,986.20-16,447.14-6,813.60

Finding the Fourth Proportional to 10,986.20, 16,447.14 and 6,813.60

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Solution

The fourth proportional to 10,986.20, 16,447.14 and 6,813.60 is: 10,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.20 : 16,447.14 = 6,813.60 : x
  2. Step 2: Convert to fraction form
    10,986.20/16,447.14 = 6,813.60/x
  3. Step 3: Cross multiply
    10,986.20x = 16,447.14 × 6,813.60
  4. Step 4: Simplify right side
    10,986.20x = 112,064,233.10
  5. Step 5: Solve for x
    x = 112,064,233.10/10,986.20
  6. Step 6: Final answer
    x = 10,200.45

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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.