Home / 12,976.78-19,463.32-4,090.95

Finding the Fourth Proportional to 12,976.78, 19,463.32 and 4,090.95

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Solution

The fourth proportional to 12,976.78, 19,463.32 and 4,090.95 is: 6,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.78 : 19,463.32 = 4,090.95 : x
  2. Step 2: Convert to fraction form
    12,976.78/19,463.32 = 4,090.95/x
  3. Step 3: Cross multiply
    12,976.78x = 19,463.32 × 4,090.95
  4. Step 4: Simplify right side
    12,976.78x = 79,623,547.06
  5. Step 5: Solve for x
    x = 79,623,547.06/12,976.78
  6. Step 6: Final answer
    x = 6,135.85

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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.