Home / 18,960.36-28,441.20-7,112.93

Finding the Fourth Proportional to 18,960.36, 28,441.20 and 7,112.93

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Solution

The fourth proportional to 18,960.36, 28,441.20 and 7,112.93 is: 10,669.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.36 : 28,441.20 = 7,112.93 : x
  2. Step 2: Convert to fraction form
    18,960.36/28,441.20 = 7,112.93/x
  3. Step 3: Cross multiply
    18,960.36x = 28,441.20 × 7,112.93
  4. Step 4: Simplify right side
    18,960.36x = 202,300,122.51
  5. Step 5: Solve for x
    x = 202,300,122.51/18,960.36
  6. Step 6: Final answer
    x = 10,669.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.