Home / 12,217.68-16,860.40-6,628.64

Finding the Fourth Proportional to 12,217.68, 16,860.40 and 6,628.64

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Solution

The fourth proportional to 12,217.68, 16,860.40 and 6,628.64 is: 9,147.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.68 : 16,860.40 = 6,628.64 : x
  2. Step 2: Convert to fraction form
    12,217.68/16,860.40 = 6,628.64/x
  3. Step 3: Cross multiply
    12,217.68x = 16,860.40 × 6,628.64
  4. Step 4: Simplify right side
    12,217.68x = 111,761,521.86
  5. Step 5: Solve for x
    x = 111,761,521.86/12,217.68
  6. Step 6: Final answer
    x = 9,147.52

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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.