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Finding the Fourth Proportional to 19,201.80, 28,802.70 and 5,350.80

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Solution

The fourth proportional to 19,201.80, 28,802.70 and 5,350.80 is: 8,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.80 : 28,802.70 = 5,350.80 : x
  2. Step 2: Convert to fraction form
    19,201.80/28,802.70 = 5,350.80/x
  3. Step 3: Cross multiply
    19,201.80x = 28,802.70 × 5,350.80
  4. Step 4: Simplify right side
    19,201.80x = 154,117,487.16
  5. Step 5: Solve for x
    x = 154,117,487.16/19,201.80
  6. Step 6: Final answer
    x = 8,026.20

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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.