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Finding the Fourth Proportional to 12,903.02, 17,809.96 and 8,427.48

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Solution

The fourth proportional to 12,903.02, 17,809.96 and 8,427.48 is: 11,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.02 : 17,809.96 = 8,427.48 : x
  2. Step 2: Convert to fraction form
    12,903.02/17,809.96 = 8,427.48/x
  3. Step 3: Cross multiply
    12,903.02x = 17,809.96 × 8,427.48
  4. Step 4: Simplify right side
    12,903.02x = 150,093,081.70
  5. Step 5: Solve for x
    x = 150,093,081.70/12,903.02
  6. Step 6: Final answer
    x = 11,632.40

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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.