Home / 12,643.16-18,964.78-4,329.18

Finding the Fourth Proportional to 12,643.16, 18,964.78 and 4,329.18

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Solution

The fourth proportional to 12,643.16, 18,964.78 and 4,329.18 is: 6,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.16 : 18,964.78 = 4,329.18 : x
  2. Step 2: Convert to fraction form
    12,643.16/18,964.78 = 4,329.18/x
  3. Step 3: Cross multiply
    12,643.16x = 18,964.78 × 4,329.18
  4. Step 4: Simplify right side
    12,643.16x = 82,101,935.46
  5. Step 5: Solve for x
    x = 82,101,935.46/12,643.16
  6. Step 6: Final answer
    x = 6,493.79

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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.