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Finding the Fourth Proportional to 14,428.95, 19,912.95 and 8,056.79

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Solution

The fourth proportional to 14,428.95, 19,912.95 and 8,056.79 is: 11,118.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.95 : 19,912.95 = 8,056.79 : x
  2. Step 2: Convert to fraction form
    14,428.95/19,912.95 = 8,056.79/x
  3. Step 3: Cross multiply
    14,428.95x = 19,912.95 × 8,056.79
  4. Step 4: Simplify right side
    14,428.95x = 160,434,456.43
  5. Step 5: Solve for x
    x = 160,434,456.43/14,428.95
  6. Step 6: Final answer
    x = 11,118.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.