Home / 12,216.16-18,322.35-4,718.65

Finding the Fourth Proportional to 12,216.16, 18,322.35 and 4,718.65

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Solution

The fourth proportional to 12,216.16, 18,322.35 and 4,718.65 is: 7,077.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.16 : 18,322.35 = 4,718.65 : x
  2. Step 2: Convert to fraction form
    12,216.16/18,322.35 = 4,718.65/x
  3. Step 3: Cross multiply
    12,216.16x = 18,322.35 × 4,718.65
  4. Step 4: Simplify right side
    12,216.16x = 86,456,688.12
  5. Step 5: Solve for x
    x = 86,456,688.12/12,216.16
  6. Step 6: Final answer
    x = 7,077.24

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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.