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Finding the Fourth Proportional to 11,315.95, 16,978.79 and 8,050.03

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Solution

The fourth proportional to 11,315.95, 16,978.79 and 8,050.03 is: 12,078.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.95 : 16,978.79 = 8,050.03 : x
  2. Step 2: Convert to fraction form
    11,315.95/16,978.79 = 8,050.03/x
  3. Step 3: Cross multiply
    11,315.95x = 16,978.79 × 8,050.03
  4. Step 4: Simplify right side
    11,315.95x = 136,679,728.61
  5. Step 5: Solve for x
    x = 136,679,728.61/11,315.95
  6. Step 6: Final answer
    x = 12,078.50

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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.