Home / 21,913.92-30,239.28-12,354.48

Finding the Fourth Proportional to 21,913.92, 30,239.28 and 12,354.48

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Solution

The fourth proportional to 21,913.92, 30,239.28 and 12,354.48 is: 17,048.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.92 : 30,239.28 = 12,354.48 : x
  2. Step 2: Convert to fraction form
    21,913.92/30,239.28 = 12,354.48/x
  3. Step 3: Cross multiply
    21,913.92x = 30,239.28 × 12,354.48
  4. Step 4: Simplify right side
    21,913.92x = 373,590,579.97
  5. Step 5: Solve for x
    x = 373,590,579.97/21,913.92
  6. Step 6: Final answer
    x = 17,048.09

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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.