Home / 13,890.68-19,168.40-7,601.84

Finding the Fourth Proportional to 13,890.68, 19,168.40 and 7,601.84

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Solution

The fourth proportional to 13,890.68, 19,168.40 and 7,601.84 is: 10,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.68 : 19,168.40 = 7,601.84 : x
  2. Step 2: Convert to fraction form
    13,890.68/19,168.40 = 7,601.84/x
  3. Step 3: Cross multiply
    13,890.68x = 19,168.40 × 7,601.84
  4. Step 4: Simplify right side
    13,890.68x = 145,715,109.86
  5. Step 5: Solve for x
    x = 145,715,109.86/13,890.68
  6. Step 6: Final answer
    x = 10,490.14

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