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Finding the Fourth Proportional to 13,802.88, 19,047.38 and 7,834.44

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Solution

The fourth proportional to 13,802.88, 19,047.38 and 7,834.44 is: 10,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,802.88 : 19,047.38 = 7,834.44 : x
  2. Step 2: Convert to fraction form
    13,802.88/19,047.38 = 7,834.44/x
  3. Step 3: Cross multiply
    13,802.88x = 19,047.38 × 7,834.44
  4. Step 4: Simplify right side
    13,802.88x = 149,225,555.77
  5. Step 5: Solve for x
    x = 149,225,555.77/13,802.88
  6. Step 6: Final answer
    x = 10,811.19

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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.