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Finding the Fourth Proportional to 19,267.30, 28,900.54 and 8,879.05

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Solution

The fourth proportional to 19,267.30, 28,900.54 and 8,879.05 is: 13,318.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,267.30 : 28,900.54 = 8,879.05 : x
  2. Step 2: Convert to fraction form
    19,267.30/28,900.54 = 8,879.05/x
  3. Step 3: Cross multiply
    19,267.30x = 28,900.54 × 8,879.05
  4. Step 4: Simplify right side
    19,267.30x = 256,609,339.69
  5. Step 5: Solve for x
    x = 256,609,339.69/19,267.30
  6. Step 6: Final answer
    x = 13,318.39

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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.