Home / 12,655.76-17,464.60-6,990.92

Finding the Fourth Proportional to 12,655.76, 17,464.60 and 6,990.92

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Solution

The fourth proportional to 12,655.76, 17,464.60 and 6,990.92 is: 9,647.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.76 : 17,464.60 = 6,990.92 : x
  2. Step 2: Convert to fraction form
    12,655.76/17,464.60 = 6,990.92/x
  3. Step 3: Cross multiply
    12,655.76x = 17,464.60 × 6,990.92
  4. Step 4: Simplify right side
    12,655.76x = 122,093,621.43
  5. Step 5: Solve for x
    x = 122,093,621.43/12,655.76
  6. Step 6: Final answer
    x = 9,647.28

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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.