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Finding the Fourth Proportional to 18,998.46, 28,497.45 and 4,958.31

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Solution

The fourth proportional to 18,998.46, 28,497.45 and 4,958.31 is: 7,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.46 : 28,497.45 = 4,958.31 : x
  2. Step 2: Convert to fraction form
    18,998.46/28,497.45 = 4,958.31/x
  3. Step 3: Cross multiply
    18,998.46x = 28,497.45 × 4,958.31
  4. Step 4: Simplify right side
    18,998.46x = 141,299,191.31
  5. Step 5: Solve for x
    x = 141,299,191.31/18,998.46
  6. Step 6: Final answer
    x = 7,437.40

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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.