Home / 19,675.14-27,143.94-12,964.32

Finding the Fourth Proportional to 19,675.14, 27,143.94 and 12,964.32

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Solution

The fourth proportional to 19,675.14, 27,143.94 and 12,964.32 is: 17,885.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,675.14 : 27,143.94 = 12,964.32 : x
  2. Step 2: Convert to fraction form
    19,675.14/27,143.94 = 12,964.32/x
  3. Step 3: Cross multiply
    19,675.14x = 27,143.94 × 12,964.32
  4. Step 4: Simplify right side
    19,675.14x = 351,902,724.22
  5. Step 5: Solve for x
    x = 351,902,724.22/19,675.14
  6. Step 6: Final answer
    x = 17,885.65

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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.