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Finding the Fourth Proportional to 11,889.74, 17,832.78 and 3,570.63

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Solution

The fourth proportional to 11,889.74, 17,832.78 and 3,570.63 is: 5,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.74 : 17,832.78 = 3,570.63 : x
  2. Step 2: Convert to fraction form
    11,889.74/17,832.78 = 3,570.63/x
  3. Step 3: Cross multiply
    11,889.74x = 17,832.78 × 3,570.63
  4. Step 4: Simplify right side
    11,889.74x = 63,674,259.25
  5. Step 5: Solve for x
    x = 63,674,259.25/11,889.74
  6. Step 6: Final answer
    x = 5,355.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.