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Finding the Fourth Proportional to 19,289.52, 28,945.14 and 8,901.27

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Solution

The fourth proportional to 19,289.52, 28,945.14 and 8,901.27 is: 13,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.52 : 28,945.14 = 8,901.27 : x
  2. Step 2: Convert to fraction form
    19,289.52/28,945.14 = 8,901.27/x
  3. Step 3: Cross multiply
    19,289.52x = 28,945.14 × 8,901.27
  4. Step 4: Simplify right side
    19,289.52x = 257,648,506.33
  5. Step 5: Solve for x
    x = 257,648,506.33/19,289.52
  6. Step 6: Final answer
    x = 13,356.92

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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.