Home / 28,519.41-42,786.40-11,873.91

Finding the Fourth Proportional to 28,519.41, 42,786.40 and 11,873.91

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Solution

The fourth proportional to 28,519.41, 42,786.40 and 11,873.91 is: 17,813.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.41 : 42,786.40 = 11,873.91 : x
  2. Step 2: Convert to fraction form
    28,519.41/42,786.40 = 11,873.91/x
  3. Step 3: Cross multiply
    28,519.41x = 42,786.40 × 11,873.91
  4. Step 4: Simplify right side
    28,519.41x = 508,041,589.52
  5. Step 5: Solve for x
    x = 508,041,589.52/28,519.41
  6. Step 6: Final answer
    x = 17,813.89

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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.