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Finding the Fourth Proportional to 26,580, 36,684.72 and 15,408.48

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Solution

The fourth proportional to 26,580, 36,684.72 and 15,408.48 is: 21,266.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,580 : 36,684.72 = 15,408.48 : x
  2. Step 2: Convert to fraction form
    26,580/36,684.72 = 15,408.48/x
  3. Step 3: Cross multiply
    26,580x = 36,684.72 × 15,408.48
  4. Step 4: Simplify right side
    26,580x = 565,255,774.43
  5. Step 5: Solve for x
    x = 565,255,774.43/26,580
  6. Step 6: Final answer
    x = 21,266.21

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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.