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Finding the Fourth Proportional to 13,007.94, 17,958.69 and 8,539.51

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Solution

The fourth proportional to 13,007.94, 17,958.69 and 8,539.51 is: 11,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,007.94 : 17,958.69 = 8,539.51 : x
  2. Step 2: Convert to fraction form
    13,007.94/17,958.69 = 8,539.51/x
  3. Step 3: Cross multiply
    13,007.94x = 17,958.69 × 8,539.51
  4. Step 4: Simplify right side
    13,007.94x = 153,358,367.95
  5. Step 5: Solve for x
    x = 153,358,367.95/13,007.94
  6. Step 6: Final answer
    x = 11,789.60

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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.