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Finding the Fourth Proportional to 28,147, 42,232.66 and 14,995.64

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Solution

The fourth proportional to 28,147, 42,232.66 and 14,995.64 is: 22,499.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147 : 42,232.66 = 14,995.64 : x
  2. Step 2: Convert to fraction form
    28,147/42,232.66 = 14,995.64/x
  3. Step 3: Cross multiply
    28,147x = 42,232.66 × 14,995.64
  4. Step 4: Simplify right side
    28,147x = 633,305,765.60
  5. Step 5: Solve for x
    x = 633,305,765.60/28,147
  6. Step 6: Final answer
    x = 22,499.94

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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.