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Finding the Fourth Proportional to 19,479, 26,881.20 and 11,095.68

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Solution

The fourth proportional to 19,479, 26,881.20 and 11,095.68 is: 15,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479 : 26,881.20 = 11,095.68 : x
  2. Step 2: Convert to fraction form
    19,479/26,881.20 = 11,095.68/x
  3. Step 3: Cross multiply
    19,479x = 26,881.20 × 11,095.68
  4. Step 4: Simplify right side
    19,479x = 298,265,193.22
  5. Step 5: Solve for x
    x = 298,265,193.22/19,479
  6. Step 6: Final answer
    x = 15,312.14

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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.