Home / 19,901.21-29,853.76-7,418.31

Finding the Fourth Proportional to 19,901.21, 29,853.76 and 7,418.31

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Solution

The fourth proportional to 19,901.21, 29,853.76 and 7,418.31 is: 11,128.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,901.21 : 29,853.76 = 7,418.31 : x
  2. Step 2: Convert to fraction form
    19,901.21/29,853.76 = 7,418.31/x
  3. Step 3: Cross multiply
    19,901.21x = 29,853.76 × 7,418.31
  4. Step 4: Simplify right side
    19,901.21x = 221,464,446.35
  5. Step 5: Solve for x
    x = 221,464,446.35/19,901.21
  6. Step 6: Final answer
    x = 11,128.19

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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.