Home / 12,943.46-19,448.03-12,072.76

Finding the Fourth Proportional to 12,943.46, 19,448.03 and 12,072.76

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Solution

The fourth proportional to 12,943.46, 19,448.03 and 12,072.76 is: 18,139.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.46 : 19,448.03 = 12,072.76 : x
  2. Step 2: Convert to fraction form
    12,943.46/19,448.03 = 12,072.76/x
  3. Step 3: Cross multiply
    12,943.46x = 19,448.03 × 12,072.76
  4. Step 4: Simplify right side
    12,943.46x = 234,791,380.22
  5. Step 5: Solve for x
    x = 234,791,380.22/12,943.46
  6. Step 6: Final answer
    x = 18,139.77

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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.