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Finding the Fourth Proportional to 12,475.64, 18,622.03 and 10,999.32

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Solution

The fourth proportional to 12,475.64, 18,622.03 and 10,999.32 is: 16,418.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.64 : 18,622.03 = 10,999.32 : x
  2. Step 2: Convert to fraction form
    12,475.64/18,622.03 = 10,999.32/x
  3. Step 3: Cross multiply
    12,475.64x = 18,622.03 × 10,999.32
  4. Step 4: Simplify right side
    12,475.64x = 204,829,667.02
  5. Step 5: Solve for x
    x = 204,829,667.02/12,475.64
  6. Step 6: Final answer
    x = 16,418.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.