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Finding the Fourth Proportional to 19,159.98, 28,728.10 and 8,060.95

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Solution

The fourth proportional to 19,159.98, 28,728.10 and 8,060.95 is: 12,086.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.98 : 28,728.10 = 8,060.95 : x
  2. Step 2: Convert to fraction form
    19,159.98/28,728.10 = 8,060.95/x
  3. Step 3: Cross multiply
    19,159.98x = 28,728.10 × 8,060.95
  4. Step 4: Simplify right side
    19,159.98x = 231,575,777.70
  5. Step 5: Solve for x
    x = 231,575,777.70/19,159.98
  6. Step 6: Final answer
    x = 12,086.43

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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.