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Finding the Fourth Proportional to 19,231.80, 28,810.80 and 14,827.56

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Solution

The fourth proportional to 19,231.80, 28,810.80 and 14,827.56 is: 22,212.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.80 : 28,810.80 = 14,827.56 : x
  2. Step 2: Convert to fraction form
    19,231.80/28,810.80 = 14,827.56/x
  3. Step 3: Cross multiply
    19,231.80x = 28,810.80 × 14,827.56
  4. Step 4: Simplify right side
    19,231.80x = 427,193,865.65
  5. Step 5: Solve for x
    x = 427,193,865.65/19,231.80
  6. Step 6: Final answer
    x = 22,212.89

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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.