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Finding the Fourth Proportional to 12,007.80, 18,101.77 and 11,204.99

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Solution

The fourth proportional to 12,007.80, 18,101.77 and 11,204.99 is: 16,891.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.80 : 18,101.77 = 11,204.99 : x
  2. Step 2: Convert to fraction form
    12,007.80/18,101.77 = 11,204.99/x
  3. Step 3: Cross multiply
    12,007.80x = 18,101.77 × 11,204.99
  4. Step 4: Simplify right side
    12,007.80x = 202,830,101.19
  5. Step 5: Solve for x
    x = 202,830,101.19/12,007.80
  6. Step 6: Final answer
    x = 16,891.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.