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Finding the Fourth Proportional to 26,403.84, 39,609 and 12,356.64

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Solution

The fourth proportional to 26,403.84, 39,609 and 12,356.64 is: 18,536.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,403.84 : 39,609 = 12,356.64 : x
  2. Step 2: Convert to fraction form
    26,403.84/39,609 = 12,356.64/x
  3. Step 3: Cross multiply
    26,403.84x = 39,609 × 12,356.64
  4. Step 4: Simplify right side
    26,403.84x = 489,434,153.76
  5. Step 5: Solve for x
    x = 489,434,153.76/26,403.84
  6. Step 6: Final answer
    x = 18,536.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.