Home / 19,189.56-26,493.84-15,661.20

Finding the Fourth Proportional to 19,189.56, 26,493.84 and 15,661.20

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Solution

The fourth proportional to 19,189.56, 26,493.84 and 15,661.20 is: 21,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,189.56 : 26,493.84 = 15,661.20 : x
  2. Step 2: Convert to fraction form
    19,189.56/26,493.84 = 15,661.20/x
  3. Step 3: Cross multiply
    19,189.56x = 26,493.84 × 15,661.20
  4. Step 4: Simplify right side
    19,189.56x = 414,925,327.01
  5. Step 5: Solve for x
    x = 414,925,327.01/19,189.56
  6. Step 6: Final answer
    x = 21,622.45

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Double scale
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Similar ratio
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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.