Home / 39,297.36-58,939.54-12,642

Finding the Fourth Proportional to 39,297.36, 58,939.54 and 12,642

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Solution

The fourth proportional to 39,297.36, 58,939.54 and 12,642 is: 18,960.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,297.36 : 58,939.54 = 12,642 : x
  2. Step 2: Convert to fraction form
    39,297.36/58,939.54 = 12,642/x
  3. Step 3: Cross multiply
    39,297.36x = 58,939.54 × 12,642
  4. Step 4: Simplify right side
    39,297.36x = 745,113,664.68
  5. Step 5: Solve for x
    x = 745,113,664.68/39,297.36
  6. Step 6: Final answer
    x = 18,960.91

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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.