Home / 19,881.27-27,442.54-12,730.44

Finding the Fourth Proportional to 19,881.27, 27,442.54 and 12,730.44

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Solution

The fourth proportional to 19,881.27, 27,442.54 and 12,730.44 is: 17,572.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.27 : 27,442.54 = 12,730.44 : x
  2. Step 2: Convert to fraction form
    19,881.27/27,442.54 = 12,730.44/x
  3. Step 3: Cross multiply
    19,881.27x = 27,442.54 × 12,730.44
  4. Step 4: Simplify right side
    19,881.27x = 349,355,508.49
  5. Step 5: Solve for x
    x = 349,355,508.49/19,881.27
  6. Step 6: Final answer
    x = 17,572.09

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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.