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Finding the Fourth Proportional to 19,204.81, 28,796.81 and 8,662.50

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Solution

The fourth proportional to 19,204.81, 28,796.81 and 8,662.50 is: 12,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,204.81 : 28,796.81 = 8,662.50 : x
  2. Step 2: Convert to fraction form
    19,204.81/28,796.81 = 8,662.50/x
  3. Step 3: Cross multiply
    19,204.81x = 28,796.81 × 8,662.50
  4. Step 4: Simplify right side
    19,204.81x = 249,452,323.31
  5. Step 5: Solve for x
    x = 249,452,323.31/19,204.81
  6. Step 6: Final answer
    x = 12,989.06

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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.