Home / 42,490.44-63,736-12,908.28

Finding the Fourth Proportional to 42,490.44, 63,736 and 12,908.28

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Solution

The fourth proportional to 42,490.44, 63,736 and 12,908.28 is: 19,362.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,490.44 : 63,736 = 12,908.28 : x
  2. Step 2: Convert to fraction form
    42,490.44/63,736 = 12,908.28/x
  3. Step 3: Cross multiply
    42,490.44x = 63,736 × 12,908.28
  4. Step 4: Simplify right side
    42,490.44x = 822,722,134.08
  5. Step 5: Solve for x
    x = 822,722,134.08/42,490.44
  6. Step 6: Final answer
    x = 19,362.52

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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.