Home / 19,929-27,504.66-12,875.94

Finding the Fourth Proportional to 19,929, 27,504.66 and 12,875.94

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Solution

The fourth proportional to 19,929, 27,504.66 and 12,875.94 is: 17,770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929 : 27,504.66 = 12,875.94 : x
  2. Step 2: Convert to fraction form
    19,929/27,504.66 = 12,875.94/x
  3. Step 3: Cross multiply
    19,929x = 27,504.66 × 12,875.94
  4. Step 4: Simplify right side
    19,929x = 354,148,351.88
  5. Step 5: Solve for x
    x = 354,148,351.88/19,929
  6. Step 6: Final answer
    x = 17,770.50

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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.