Home / 38,429.02-57,643.80-12,135.88

Finding the Fourth Proportional to 38,429.02, 57,643.80 and 12,135.88

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Solution

The fourth proportional to 38,429.02, 57,643.80 and 12,135.88 is: 18,203.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,429.02 : 57,643.80 = 12,135.88 : x
  2. Step 2: Convert to fraction form
    38,429.02/57,643.80 = 12,135.88/x
  3. Step 3: Cross multiply
    38,429.02x = 57,643.80 × 12,135.88
  4. Step 4: Simplify right side
    38,429.02x = 699,558,239.54
  5. Step 5: Solve for x
    x = 699,558,239.54/38,429.02
  6. Step 6: Final answer
    x = 18,203.91

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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.