Home / 30,938.10-46,416.42-12,220.80

Finding the Fourth Proportional to 30,938.10, 46,416.42 and 12,220.80

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Solution

The fourth proportional to 30,938.10, 46,416.42 and 12,220.80 is: 18,334.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.10 : 46,416.42 = 12,220.80 : x
  2. Step 2: Convert to fraction form
    30,938.10/46,416.42 = 12,220.80/x
  3. Step 3: Cross multiply
    30,938.10x = 46,416.42 × 12,220.80
  4. Step 4: Simplify right side
    30,938.10x = 567,245,785.54
  5. Step 5: Solve for x
    x = 567,245,785.54/30,938.10
  6. Step 6: Final answer
    x = 18,334.86

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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.