Home / 13,054.79-18,015.12-7,086.33

Finding the Fourth Proportional to 13,054.79, 18,015.12 and 7,086.33

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Solution

The fourth proportional to 13,054.79, 18,015.12 and 7,086.33 is: 9,778.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,054.79 : 18,015.12 = 7,086.33 : x
  2. Step 2: Convert to fraction form
    13,054.79/18,015.12 = 7,086.33/x
  3. Step 3: Cross multiply
    13,054.79x = 18,015.12 × 7,086.33
  4. Step 4: Simplify right side
    13,054.79x = 127,660,959.80
  5. Step 5: Solve for x
    x = 127,660,959.80/13,054.79
  6. Step 6: Final answer
    x = 9,778.86

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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.