Home / 19,680.77-27,157.07-11,182.86

Finding the Fourth Proportional to 19,680.77, 27,157.07 and 11,182.86

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Solution

The fourth proportional to 19,680.77, 27,157.07 and 11,182.86 is: 15,430.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.77 : 27,157.07 = 11,182.86 : x
  2. Step 2: Convert to fraction form
    19,680.77/27,157.07 = 11,182.86/x
  3. Step 3: Cross multiply
    19,680.77x = 27,157.07 × 11,182.86
  4. Step 4: Simplify right side
    19,680.77x = 303,693,739.78
  5. Step 5: Solve for x
    x = 303,693,739.78/19,680.77
  6. Step 6: Final answer
    x = 15,430.99

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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.