Home / 14,286.81-19,715.15-7,912.98

Finding the Fourth Proportional to 14,286.81, 19,715.15 and 7,912.98

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Solution

The fourth proportional to 14,286.81, 19,715.15 and 7,912.98 is: 10,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,286.81 : 19,715.15 = 7,912.98 : x
  2. Step 2: Convert to fraction form
    14,286.81/19,715.15 = 7,912.98/x
  3. Step 3: Cross multiply
    14,286.81x = 19,715.15 × 7,912.98
  4. Step 4: Simplify right side
    14,286.81x = 156,005,548.08
  5. Step 5: Solve for x
    x = 156,005,548.08/14,286.81
  6. Step 6: Final answer
    x = 10,919.55

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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.