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Finding the Fourth Proportional to 19,004.76, 28,512 and 15,340.32

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Solution

The fourth proportional to 19,004.76, 28,512 and 15,340.32 is: 23,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,004.76 : 28,512 = 15,340.32 : x
  2. Step 2: Convert to fraction form
    19,004.76/28,512 = 15,340.32/x
  3. Step 3: Cross multiply
    19,004.76x = 28,512 × 15,340.32
  4. Step 4: Simplify right side
    19,004.76x = 437,383,203.84
  5. Step 5: Solve for x
    x = 437,383,203.84/19,004.76
  6. Step 6: Final answer
    x = 23,014.40

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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.