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Finding the Fourth Proportional to 21,955.94, 32,940.06 and 8,817.53

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Solution

The fourth proportional to 21,955.94, 32,940.06 and 8,817.53 is: 13,228.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.94 : 32,940.06 = 8,817.53 : x
  2. Step 2: Convert to fraction form
    21,955.94/32,940.06 = 8,817.53/x
  3. Step 3: Cross multiply
    21,955.94x = 32,940.06 × 8,817.53
  4. Step 4: Simplify right side
    21,955.94x = 290,449,967.25
  5. Step 5: Solve for x
    x = 290,449,967.25/21,955.94
  6. Step 6: Final answer
    x = 13,228.76

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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.