Home / 30,240.78-45,382.04-10,519.32

Finding the Fourth Proportional to 30,240.78, 45,382.04 and 10,519.32

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Solution

The fourth proportional to 30,240.78, 45,382.04 and 10,519.32 is: 15,786.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,240.78 : 45,382.04 = 10,519.32 : x
  2. Step 2: Convert to fraction form
    30,240.78/45,382.04 = 10,519.32/x
  3. Step 3: Cross multiply
    30,240.78x = 45,382.04 × 10,519.32
  4. Step 4: Simplify right side
    30,240.78x = 477,388,201.01
  5. Step 5: Solve for x
    x = 477,388,201.01/30,240.78
  6. Step 6: Final answer
    x = 15,786.24

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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.