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Finding the Fourth Proportional to 13,788.95, 19,028.64 and 7,501.32

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Solution

The fourth proportional to 13,788.95, 19,028.64 and 7,501.32 is: 10,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.95 : 19,028.64 = 7,501.32 : x
  2. Step 2: Convert to fraction form
    13,788.95/19,028.64 = 7,501.32/x
  3. Step 3: Cross multiply
    13,788.95x = 19,028.64 × 7,501.32
  4. Step 4: Simplify right side
    13,788.95x = 142,739,917.80
  5. Step 5: Solve for x
    x = 142,739,917.80/13,788.95
  6. Step 6: Final answer
    x = 10,351.76

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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.