Home / 30,928.35-46,404.68-12,205.20

Finding the Fourth Proportional to 30,928.35, 46,404.68 and 12,205.20

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Solution

The fourth proportional to 30,928.35, 46,404.68 and 12,205.20 is: 18,312.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,928.35 : 46,404.68 = 12,205.20 : x
  2. Step 2: Convert to fraction form
    30,928.35/46,404.68 = 12,205.20/x
  3. Step 3: Cross multiply
    30,928.35x = 46,404.68 × 12,205.20
  4. Step 4: Simplify right side
    30,928.35x = 566,378,339.31
  5. Step 5: Solve for x
    x = 566,378,339.31/30,928.35
  6. Step 6: Final answer
    x = 18,312.59

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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.