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Finding the Fourth Proportional to 13,125.99, 19,686.11 and 3,763.47

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Solution

The fourth proportional to 13,125.99, 19,686.11 and 3,763.47 is: 5,644.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.99 : 19,686.11 = 3,763.47 : x
  2. Step 2: Convert to fraction form
    13,125.99/19,686.11 = 3,763.47/x
  3. Step 3: Cross multiply
    13,125.99x = 19,686.11 × 3,763.47
  4. Step 4: Simplify right side
    13,125.99x = 74,088,065.58
  5. Step 5: Solve for x
    x = 74,088,065.58/13,125.99
  6. Step 6: Final answer
    x = 5,644.38

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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.