Home / 20,104-30,111.36-11,319.28

Finding the Fourth Proportional to 20,104, 30,111.36 and 11,319.28

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Solution

The fourth proportional to 20,104, 30,111.36 and 11,319.28 is: 16,953.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104 : 30,111.36 = 11,319.28 : x
  2. Step 2: Convert to fraction form
    20,104/30,111.36 = 11,319.28/x
  3. Step 3: Cross multiply
    20,104x = 30,111.36 × 11,319.28
  4. Step 4: Simplify right side
    20,104x = 340,838,915.02
  5. Step 5: Solve for x
    x = 340,838,915.02/20,104
  6. Step 6: Final answer
    x = 16,953.79

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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.