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Finding the Fourth Proportional to 19,219.65, 28,827.94 and 8,549.32

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Solution

The fourth proportional to 19,219.65, 28,827.94 and 8,549.32 is: 12,823.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,219.65 : 28,827.94 = 8,549.32 : x
  2. Step 2: Convert to fraction form
    19,219.65/28,827.94 = 8,549.32/x
  3. Step 3: Cross multiply
    19,219.65x = 28,827.94 × 8,549.32
  4. Step 4: Simplify right side
    19,219.65x = 246,459,241.25
  5. Step 5: Solve for x
    x = 246,459,241.25/19,219.65
  6. Step 6: Final answer
    x = 12,823.29

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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.