Home / 19,905.54-29,851.77-8,811.99

Finding the Fourth Proportional to 19,905.54, 29,851.77 and 8,811.99

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Solution

The fourth proportional to 19,905.54, 29,851.77 and 8,811.99 is: 13,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.54 : 29,851.77 = 8,811.99 : x
  2. Step 2: Convert to fraction form
    19,905.54/29,851.77 = 8,811.99/x
  3. Step 3: Cross multiply
    19,905.54x = 29,851.77 × 8,811.99
  4. Step 4: Simplify right side
    19,905.54x = 263,053,498.72
  5. Step 5: Solve for x
    x = 263,053,498.72/19,905.54
  6. Step 6: Final answer
    x = 13,215.09

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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.