Home / 42,726.86-64,090.44-13,144.49

Finding the Fourth Proportional to 42,726.86, 64,090.44 and 13,144.49

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Solution

The fourth proportional to 42,726.86, 64,090.44 and 13,144.49 is: 19,716.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,726.86 : 64,090.44 = 13,144.49 : x
  2. Step 2: Convert to fraction form
    42,726.86/64,090.44 = 13,144.49/x
  3. Step 3: Cross multiply
    42,726.86x = 64,090.44 × 13,144.49
  4. Step 4: Simplify right side
    42,726.86x = 842,436,147.68
  5. Step 5: Solve for x
    x = 842,436,147.68/42,726.86
  6. Step 6: Final answer
    x = 19,716.78

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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.