Home / 12,621.81-18,932.72-4,830.63

Finding the Fourth Proportional to 12,621.81, 18,932.72 and 4,830.63

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Solution

The fourth proportional to 12,621.81, 18,932.72 and 4,830.63 is: 7,245.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.81 : 18,932.72 = 4,830.63 : x
  2. Step 2: Convert to fraction form
    12,621.81/18,932.72 = 4,830.63/x
  3. Step 3: Cross multiply
    12,621.81x = 18,932.72 × 4,830.63
  4. Step 4: Simplify right side
    12,621.81x = 91,456,965.21
  5. Step 5: Solve for x
    x = 91,456,965.21/12,621.81
  6. Step 6: Final answer
    x = 7,245.95

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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.