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Finding the Fourth Proportional to 19,328.98, 28,990.05 and 8,796.55

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Solution

The fourth proportional to 19,328.98, 28,990.05 and 8,796.55 is: 13,193.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328.98 : 28,990.05 = 8,796.55 : x
  2. Step 2: Convert to fraction form
    19,328.98/28,990.05 = 8,796.55/x
  3. Step 3: Cross multiply
    19,328.98x = 28,990.05 × 8,796.55
  4. Step 4: Simplify right side
    19,328.98x = 255,012,424.33
  5. Step 5: Solve for x
    x = 255,012,424.33/19,328.98
  6. Step 6: Final answer
    x = 13,193.27

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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.