Home / 30,245.80-41,742.18-16,821.40

Finding the Fourth Proportional to 30,245.80, 41,742.18 and 16,821.40

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Solution

The fourth proportional to 30,245.80, 41,742.18 and 16,821.40 is: 23,215.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,245.80 : 41,742.18 = 16,821.40 : x
  2. Step 2: Convert to fraction form
    30,245.80/41,742.18 = 16,821.40/x
  3. Step 3: Cross multiply
    30,245.80x = 41,742.18 × 16,821.40
  4. Step 4: Simplify right side
    30,245.80x = 702,161,906.65
  5. Step 5: Solve for x
    x = 702,161,906.65/30,245.80
  6. Step 6: Final answer
    x = 23,215.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.