Home / 12,384.97-18,578.07-4,988.43

Finding the Fourth Proportional to 12,384.97, 18,578.07 and 4,988.43

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Solution

The fourth proportional to 12,384.97, 18,578.07 and 4,988.43 is: 7,482.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.97 : 18,578.07 = 4,988.43 : x
  2. Step 2: Convert to fraction form
    12,384.97/18,578.07 = 4,988.43/x
  3. Step 3: Cross multiply
    12,384.97x = 18,578.07 × 4,988.43
  4. Step 4: Simplify right side
    12,384.97x = 92,675,383.02
  5. Step 5: Solve for x
    x = 92,675,383.02/12,384.97
  6. Step 6: Final answer
    x = 7,482.89

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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.