Home / 30,078.21-45,113.67-15,297.75

Finding the Fourth Proportional to 30,078.21, 45,113.67 and 15,297.75

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Solution

The fourth proportional to 30,078.21, 45,113.67 and 15,297.75 is: 22,944.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.21 : 45,113.67 = 15,297.75 : x
  2. Step 2: Convert to fraction form
    30,078.21/45,113.67 = 15,297.75/x
  3. Step 3: Cross multiply
    30,078.21x = 45,113.67 × 15,297.75
  4. Step 4: Simplify right side
    30,078.21x = 690,137,645.24
  5. Step 5: Solve for x
    x = 690,137,645.24/30,078.21
  6. Step 6: Final answer
    x = 22,944.77

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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.