Home / 13,868.72-19,138.88-7,581.12

Finding the Fourth Proportional to 13,868.72, 19,138.88 and 7,581.12

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Solution

The fourth proportional to 13,868.72, 19,138.88 and 7,581.12 is: 10,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.72 : 19,138.88 = 7,581.12 : x
  2. Step 2: Convert to fraction form
    13,868.72/19,138.88 = 7,581.12/x
  3. Step 3: Cross multiply
    13,868.72x = 19,138.88 × 7,581.12
  4. Step 4: Simplify right side
    13,868.72x = 145,094,145.95
  5. Step 5: Solve for x
    x = 145,094,145.95/13,868.72
  6. Step 6: Final answer
    x = 10,461.97

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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.