Home / 12,674.95-18,919.58-11,178.62

Finding the Fourth Proportional to 12,674.95, 18,919.58 and 11,178.62

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Solution

The fourth proportional to 12,674.95, 18,919.58 and 11,178.62 is: 16,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.95 : 18,919.58 = 11,178.62 : x
  2. Step 2: Convert to fraction form
    12,674.95/18,919.58 = 11,178.62/x
  3. Step 3: Cross multiply
    12,674.95x = 18,919.58 × 11,178.62
  4. Step 4: Simplify right side
    12,674.95x = 211,494,916.58
  5. Step 5: Solve for x
    x = 211,494,916.58/12,674.95
  6. Step 6: Final answer
    x = 16,686.06

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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.