Home / 30,198.21-45,276.66-15,378.45

Finding the Fourth Proportional to 30,198.21, 45,276.66 and 15,378.45

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Solution

The fourth proportional to 30,198.21, 45,276.66 and 15,378.45 is: 23,057.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,198.21 : 45,276.66 = 15,378.45 : x
  2. Step 2: Convert to fraction form
    30,198.21/45,276.66 = 15,378.45/x
  3. Step 3: Cross multiply
    30,198.21x = 45,276.66 × 15,378.45
  4. Step 4: Simplify right side
    30,198.21x = 696,284,851.98
  5. Step 5: Solve for x
    x = 696,284,851.98/30,198.21
  6. Step 6: Final answer
    x = 23,057.16

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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.