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Finding the Fourth Proportional to 10,911.65, 16,376.04 and 7,603.20

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Solution

The fourth proportional to 10,911.65, 16,376.04 and 7,603.20 is: 11,410.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.65 : 16,376.04 = 7,603.20 : x
  2. Step 2: Convert to fraction form
    10,911.65/16,376.04 = 7,603.20/x
  3. Step 3: Cross multiply
    10,911.65x = 16,376.04 × 7,603.20
  4. Step 4: Simplify right side
    10,911.65x = 124,510,307.33
  5. Step 5: Solve for x
    x = 124,510,307.33/10,911.65
  6. Step 6: Final answer
    x = 11,410.77

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.