Home / 18,617.28-25,672.80-12,327.36

Finding the Fourth Proportional to 18,617.28, 25,672.80 and 12,327.36

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Solution

The fourth proportional to 18,617.28, 25,672.80 and 12,327.36 is: 16,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.28 : 25,672.80 = 12,327.36 : x
  2. Step 2: Convert to fraction form
    18,617.28/25,672.80 = 12,327.36/x
  3. Step 3: Cross multiply
    18,617.28x = 25,672.80 × 12,327.36
  4. Step 4: Simplify right side
    18,617.28x = 316,477,847.81
  5. Step 5: Solve for x
    x = 316,477,847.81/18,617.28
  6. Step 6: Final answer
    x = 16,999.15

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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.