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Finding the Fourth Proportional to 19,313.64, 28,964.28 and 6,162.96

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Solution

The fourth proportional to 19,313.64, 28,964.28 and 6,162.96 is: 9,242.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313.64 : 28,964.28 = 6,162.96 : x
  2. Step 2: Convert to fraction form
    19,313.64/28,964.28 = 6,162.96/x
  3. Step 3: Cross multiply
    19,313.64x = 28,964.28 × 6,162.96
  4. Step 4: Simplify right side
    19,313.64x = 178,505,699.07
  5. Step 5: Solve for x
    x = 178,505,699.07/19,313.64
  6. Step 6: Final answer
    x = 9,242.47

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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.