Home / 30,115.40-41,555.89-16,683.30

Finding the Fourth Proportional to 30,115.40, 41,555.89 and 16,683.30

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Solution

The fourth proportional to 30,115.40, 41,555.89 and 16,683.30 is: 23,021.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,115.40 : 41,555.89 = 16,683.30 : x
  2. Step 2: Convert to fraction form
    30,115.40/41,555.89 = 16,683.30/x
  3. Step 3: Cross multiply
    30,115.40x = 41,555.89 × 16,683.30
  4. Step 4: Simplify right side
    30,115.40x = 693,289,306.65
  5. Step 5: Solve for x
    x = 693,289,306.65/30,115.40
  6. Step 6: Final answer
    x = 23,021.09

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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.