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Finding the Fourth Proportional to 19,645.68, 27,110.40 and 11,148.48

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Solution

The fourth proportional to 19,645.68, 27,110.40 and 11,148.48 is: 15,384.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.68 : 27,110.40 = 11,148.48 : x
  2. Step 2: Convert to fraction form
    19,645.68/27,110.40 = 11,148.48/x
  3. Step 3: Cross multiply
    19,645.68x = 27,110.40 × 11,148.48
  4. Step 4: Simplify right side
    19,645.68x = 302,239,752.19
  5. Step 5: Solve for x
    x = 302,239,752.19/19,645.68
  6. Step 6: Final answer
    x = 15,384.54

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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.