Home / 12,970.14-19,331.83-12,231.96

Finding the Fourth Proportional to 12,970.14, 19,331.83 and 12,231.96

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Solution

The fourth proportional to 12,970.14, 19,331.83 and 12,231.96 is: 18,231.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,970.14 : 19,331.83 = 12,231.96 : x
  2. Step 2: Convert to fraction form
    12,970.14/19,331.83 = 12,231.96/x
  3. Step 3: Cross multiply
    12,970.14x = 19,331.83 × 12,231.96
  4. Step 4: Simplify right side
    12,970.14x = 236,466,171.29
  5. Step 5: Solve for x
    x = 236,466,171.29/12,970.14
  6. Step 6: Final answer
    x = 18,231.58

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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.