Home / 13,672.08-18,867.30-7,704.36

Finding the Fourth Proportional to 13,672.08, 18,867.30 and 7,704.36

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Solution

The fourth proportional to 13,672.08, 18,867.30 and 7,704.36 is: 10,631.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.08 : 18,867.30 = 7,704.36 : x
  2. Step 2: Convert to fraction form
    13,672.08/18,867.30 = 7,704.36/x
  3. Step 3: Cross multiply
    13,672.08x = 18,867.30 × 7,704.36
  4. Step 4: Simplify right side
    13,672.08x = 145,360,471.43
  5. Step 5: Solve for x
    x = 145,360,471.43/13,672.08
  6. Step 6: Final answer
    x = 10,631.92

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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.