Home / 19,218.46-28,827.70-5,178.52

Finding the Fourth Proportional to 19,218.46, 28,827.70 and 5,178.52

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Solution

The fourth proportional to 19,218.46, 28,827.70 and 5,178.52 is: 7,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.46 : 28,827.70 = 5,178.52 : x
  2. Step 2: Convert to fraction form
    19,218.46/28,827.70 = 5,178.52/x
  3. Step 3: Cross multiply
    19,218.46x = 28,827.70 × 5,178.52
  4. Step 4: Simplify right side
    19,218.46x = 149,284,821.00
  5. Step 5: Solve for x
    x = 149,284,821.00/19,218.46
  6. Step 6: Final answer
    x = 7,767.78

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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.