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Finding the Fourth Proportional to 13,889.02, 19,166.88 and 7,601.80

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Solution

The fourth proportional to 13,889.02, 19,166.88 and 7,601.80 is: 10,490.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.02 : 19,166.88 = 7,601.80 : x
  2. Step 2: Convert to fraction form
    13,889.02/19,166.88 = 7,601.80/x
  3. Step 3: Cross multiply
    13,889.02x = 19,166.88 × 7,601.80
  4. Step 4: Simplify right side
    13,889.02x = 145,702,788.38
  5. Step 5: Solve for x
    x = 145,702,788.38/13,889.02
  6. Step 6: Final answer
    x = 10,490.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.