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Finding the Fourth Proportional to 28,549.44, 42,824.16 and 11,917.31

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Solution

The fourth proportional to 28,549.44, 42,824.16 and 11,917.31 is: 17,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.44 : 42,824.16 = 11,917.31 : x
  2. Step 2: Convert to fraction form
    28,549.44/42,824.16 = 11,917.31/x
  3. Step 3: Cross multiply
    28,549.44x = 42,824.16 × 11,917.31
  4. Step 4: Simplify right side
    28,549.44x = 510,348,576.09
  5. Step 5: Solve for x
    x = 510,348,576.09/28,549.44
  6. Step 6: Final answer
    x = 17,875.96

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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.