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Finding the Fourth Proportional to 10,889.56, 15,027.84 and 5,921.56

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Solution

The fourth proportional to 10,889.56, 15,027.84 and 5,921.56 is: 8,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.56 : 15,027.84 = 5,921.56 : x
  2. Step 2: Convert to fraction form
    10,889.56/15,027.84 = 5,921.56/x
  3. Step 3: Cross multiply
    10,889.56x = 15,027.84 × 5,921.56
  4. Step 4: Simplify right side
    10,889.56x = 88,988,256.23
  5. Step 5: Solve for x
    x = 88,988,256.23/10,889.56
  6. Step 6: Final answer
    x = 8,171.89

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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.