Home / 21,015.55-31,523.27-6,976.64

Finding the Fourth Proportional to 21,015.55, 31,523.27 and 6,976.64

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Solution

The fourth proportional to 21,015.55, 31,523.27 and 6,976.64 is: 10,464.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.55 : 31,523.27 = 6,976.64 : x
  2. Step 2: Convert to fraction form
    21,015.55/31,523.27 = 6,976.64/x
  3. Step 3: Cross multiply
    21,015.55x = 31,523.27 × 6,976.64
  4. Step 4: Simplify right side
    21,015.55x = 219,926,629.01
  5. Step 5: Solve for x
    x = 219,926,629.01/21,015.55
  6. Step 6: Final answer
    x = 10,464.95

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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.