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Finding the Fourth Proportional to 29,921.28, 44,889.60 and 9,144.72

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Solution

The fourth proportional to 29,921.28, 44,889.60 and 9,144.72 is: 13,719.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,921.28 : 44,889.60 = 9,144.72 : x
  2. Step 2: Convert to fraction form
    29,921.28/44,889.60 = 9,144.72/x
  3. Step 3: Cross multiply
    29,921.28x = 44,889.60 × 9,144.72
  4. Step 4: Simplify right side
    29,921.28x = 410,502,822.91
  5. Step 5: Solve for x
    x = 410,502,822.91/29,921.28
  6. Step 6: Final answer
    x = 13,719.43

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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.