Home / 18,960.24-28,460.40-10,647.36

Finding the Fourth Proportional to 18,960.24, 28,460.40 and 10,647.36

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Solution

The fourth proportional to 18,960.24, 28,460.40 and 10,647.36 is: 15,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.24 : 28,460.40 = 10,647.36 : x
  2. Step 2: Convert to fraction form
    18,960.24/28,460.40 = 10,647.36/x
  3. Step 3: Cross multiply
    18,960.24x = 28,460.40 × 10,647.36
  4. Step 4: Simplify right side
    18,960.24x = 303,028,124.54
  5. Step 5: Solve for x
    x = 303,028,124.54/18,960.24
  6. Step 6: Final answer
    x = 15,982.29

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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.