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Finding the Fourth Proportional to 19,157.45, 28,736.98 and 6,678.72

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Solution

The fourth proportional to 19,157.45, 28,736.98 and 6,678.72 is: 10,018.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.45 : 28,736.98 = 6,678.72 : x
  2. Step 2: Convert to fraction form
    19,157.45/28,736.98 = 6,678.72/x
  3. Step 3: Cross multiply
    19,157.45x = 28,736.98 × 6,678.72
  4. Step 4: Simplify right side
    19,157.45x = 191,926,226.37
  5. Step 5: Solve for x
    x = 191,926,226.37/19,157.45
  6. Step 6: Final answer
    x = 10,018.36

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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.