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Finding the Fourth Proportional to 13,289.01, 19,938.05 and 8,352.87

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Solution

The fourth proportional to 13,289.01, 19,938.05 and 8,352.87 is: 12,532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.01 : 19,938.05 = 8,352.87 : x
  2. Step 2: Convert to fraction form
    13,289.01/19,938.05 = 8,352.87/x
  3. Step 3: Cross multiply
    13,289.01x = 19,938.05 × 8,352.87
  4. Step 4: Simplify right side
    13,289.01x = 166,539,897.94
  5. Step 5: Solve for x
    x = 166,539,897.94/13,289.01
  6. Step 6: Final answer
    x = 12,532.15

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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.