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Finding the Fourth Proportional to 12,290.56, 16,955.04 and 8,927.84

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Solution

The fourth proportional to 12,290.56, 16,955.04 and 8,927.84 is: 12,316.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.56 : 16,955.04 = 8,927.84 : x
  2. Step 2: Convert to fraction form
    12,290.56/16,955.04 = 8,927.84/x
  3. Step 3: Cross multiply
    12,290.56x = 16,955.04 × 8,927.84
  4. Step 4: Simplify right side
    12,290.56x = 151,371,884.31
  5. Step 5: Solve for x
    x = 151,371,884.31/12,290.56
  6. Step 6: Final answer
    x = 12,316.11

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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.