Home / 30,399.19-45,649.22-18,786.22

Finding the Fourth Proportional to 30,399.19, 45,649.22 and 18,786.22

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Solution

The fourth proportional to 30,399.19, 45,649.22 and 18,786.22 is: 28,210.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,399.19 : 45,649.22 = 18,786.22 : x
  2. Step 2: Convert to fraction form
    30,399.19/45,649.22 = 18,786.22/x
  3. Step 3: Cross multiply
    30,399.19x = 45,649.22 × 18,786.22
  4. Step 4: Simplify right side
    30,399.19x = 857,576,081.69
  5. Step 5: Solve for x
    x = 857,576,081.69/30,399.19
  6. Step 6: Final answer
    x = 28,210.49

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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.