Home / 30,561.73-42,189.00-19,247.85

Finding the Fourth Proportional to 30,561.73, 42,189.00 and 19,247.85

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Solution

The fourth proportional to 30,561.73, 42,189.00 and 19,247.85 is: 26,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,561.73 : 42,189.00 = 19,247.85 : x
  2. Step 2: Convert to fraction form
    30,561.73/42,189.00 = 19,247.85/x
  3. Step 3: Cross multiply
    30,561.73x = 42,189.00 × 19,247.85
  4. Step 4: Simplify right side
    30,561.73x = 812,047,698.40
  5. Step 5: Solve for x
    x = 812,047,698.40/30,561.73
  6. Step 6: Final answer
    x = 26,570.73

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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.