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Finding the Fourth Proportional to 11,678.99, 17,435.30 and 11,268.92

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Solution

The fourth proportional to 11,678.99, 17,435.30 and 11,268.92 is: 16,823.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.99 : 17,435.30 = 11,268.92 : x
  2. Step 2: Convert to fraction form
    11,678.99/17,435.30 = 11,268.92/x
  3. Step 3: Cross multiply
    11,678.99x = 17,435.30 × 11,268.92
  4. Step 4: Simplify right side
    11,678.99x = 196,477,051.51
  5. Step 5: Solve for x
    x = 196,477,051.51/11,678.99
  6. Step 6: Final answer
    x = 16,823.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.