Home / 30,278.58-41,760.77-19,671.63

Finding the Fourth Proportional to 30,278.58, 41,760.77 and 19,671.63

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Solution

The fourth proportional to 30,278.58, 41,760.77 and 19,671.63 is: 27,131.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.58 : 41,760.77 = 19,671.63 : x
  2. Step 2: Convert to fraction form
    30,278.58/41,760.77 = 19,671.63/x
  3. Step 3: Cross multiply
    30,278.58x = 41,760.77 × 19,671.63
  4. Step 4: Simplify right side
    30,278.58x = 821,502,415.96
  5. Step 5: Solve for x
    x = 821,502,415.96/30,278.58
  6. Step 6: Final answer
    x = 27,131.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.