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Finding the Fourth Proportional to 12,804.88, 17,664.45 and 8,556.99

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Solution

The fourth proportional to 12,804.88, 17,664.45 and 8,556.99 is: 11,804.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,804.88 : 17,664.45 = 8,556.99 : x
  2. Step 2: Convert to fraction form
    12,804.88/17,664.45 = 8,556.99/x
  3. Step 3: Cross multiply
    12,804.88x = 17,664.45 × 8,556.99
  4. Step 4: Simplify right side
    12,804.88x = 151,154,522.01
  5. Step 5: Solve for x
    x = 151,154,522.01/12,804.88
  6. Step 6: Final answer
    x = 11,804.45

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1.5x scale

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.