Home / 20,992.19-31,482.43-6,953.31

Finding the Fourth Proportional to 20,992.19, 31,482.43 and 6,953.31

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Solution

The fourth proportional to 20,992.19, 31,482.43 and 6,953.31 is: 10,428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.19 : 31,482.43 = 6,953.31 : x
  2. Step 2: Convert to fraction form
    20,992.19/31,482.43 = 6,953.31/x
  3. Step 3: Cross multiply
    20,992.19x = 31,482.43 × 6,953.31
  4. Step 4: Simplify right side
    20,992.19x = 218,907,077.96
  5. Step 5: Solve for x
    x = 218,907,077.96/20,992.19
  6. Step 6: Final answer
    x = 10,428.03

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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.