Home / 18,964.32-28,467.36-11,178.72

Finding the Fourth Proportional to 18,964.32, 28,467.36 and 11,178.72

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Solution

The fourth proportional to 18,964.32, 28,467.36 and 11,178.72 is: 16,780.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964.32 : 28,467.36 = 11,178.72 : x
  2. Step 2: Convert to fraction form
    18,964.32/28,467.36 = 11,178.72/x
  3. Step 3: Cross multiply
    18,964.32x = 28,467.36 × 11,178.72
  4. Step 4: Simplify right side
    18,964.32x = 318,228,646.58
  5. Step 5: Solve for x
    x = 318,228,646.58/18,964.32
  6. Step 6: Final answer
    x = 16,780.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.