Home / 12,218.40-18,315.24-4,828.08

Finding the Fourth Proportional to 12,218.40, 18,315.24 and 4,828.08

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Solution

The fourth proportional to 12,218.40, 18,315.24 and 4,828.08 is: 7,237.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.40 : 18,315.24 = 4,828.08 : x
  2. Step 2: Convert to fraction form
    12,218.40/18,315.24 = 4,828.08/x
  3. Step 3: Cross multiply
    12,218.40x = 18,315.24 × 4,828.08
  4. Step 4: Simplify right side
    12,218.40x = 88,427,443.94
  5. Step 5: Solve for x
    x = 88,427,443.94/12,218.40
  6. Step 6: Final answer
    x = 7,237.24

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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.