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Finding the Fourth Proportional to 26,487, 36,556.92 and 15,309

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Solution

The fourth proportional to 26,487, 36,556.92 and 15,309 is: 21,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,487 : 36,556.92 = 15,309 : x
  2. Step 2: Convert to fraction form
    26,487/36,556.92 = 15,309/x
  3. Step 3: Cross multiply
    26,487x = 36,556.92 × 15,309
  4. Step 4: Simplify right side
    26,487x = 559,649,888.28
  5. Step 5: Solve for x
    x = 559,649,888.28/26,487
  6. Step 6: Final answer
    x = 21,129.23

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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.