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Finding the Fourth Proportional to 22,206.63, 30,646.59 and 12,774.99

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Solution

The fourth proportional to 22,206.63, 30,646.59 and 12,774.99 is: 17,630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,206.63 : 30,646.59 = 12,774.99 : x
  2. Step 2: Convert to fraction form
    22,206.63/30,646.59 = 12,774.99/x
  3. Step 3: Cross multiply
    22,206.63x = 30,646.59 × 12,774.99
  4. Step 4: Simplify right side
    22,206.63x = 391,509,880.78
  5. Step 5: Solve for x
    x = 391,509,880.78/22,206.63
  6. Step 6: Final answer
    x = 17,630.31

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