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Finding the Fourth Proportional to 19,168.48, 28,699.34 and 9,788.20

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Solution

The fourth proportional to 19,168.48, 28,699.34 and 9,788.20 is: 14,655.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.48 : 28,699.34 = 9,788.20 : x
  2. Step 2: Convert to fraction form
    19,168.48/28,699.34 = 9,788.20/x
  3. Step 3: Cross multiply
    19,168.48x = 28,699.34 × 9,788.20
  4. Step 4: Simplify right side
    19,168.48x = 280,914,879.79
  5. Step 5: Solve for x
    x = 280,914,879.79/19,168.48
  6. Step 6: Final answer
    x = 14,655.04

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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.