Home / 12,582.88-17,357.20-7,800.64

Finding the Fourth Proportional to 12,582.88, 17,357.20 and 7,800.64

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Solution

The fourth proportional to 12,582.88, 17,357.20 and 7,800.64 is: 10,760.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,582.88 : 17,357.20 = 7,800.64 : x
  2. Step 2: Convert to fraction form
    12,582.88/17,357.20 = 7,800.64/x
  3. Step 3: Cross multiply
    12,582.88x = 17,357.20 × 7,800.64
  4. Step 4: Simplify right side
    12,582.88x = 135,397,268.61
  5. Step 5: Solve for x
    x = 135,397,268.61/12,582.88
  6. Step 6: Final answer
    x = 10,760.44

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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.