Home / 30,893.76-42,619.04-18,142.80

Finding the Fourth Proportional to 30,893.76, 42,619.04 and 18,142.80

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Solution

The fourth proportional to 30,893.76, 42,619.04 and 18,142.80 is: 25,028.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,893.76 : 42,619.04 = 18,142.80 : x
  2. Step 2: Convert to fraction form
    30,893.76/42,619.04 = 18,142.80/x
  3. Step 3: Cross multiply
    30,893.76x = 42,619.04 × 18,142.80
  4. Step 4: Simplify right side
    30,893.76x = 773,228,628.20
  5. Step 5: Solve for x
    x = 773,228,628.20/30,893.76
  6. Step 6: Final answer
    x = 25,028.63

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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.