Home / 20,795.40-31,206.78-7,647.93

Finding the Fourth Proportional to 20,795.40, 31,206.78 and 7,647.93

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Solution

The fourth proportional to 20,795.40, 31,206.78 and 7,647.93 is: 11,476.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.40 : 31,206.78 = 7,647.93 : x
  2. Step 2: Convert to fraction form
    20,795.40/31,206.78 = 7,647.93/x
  3. Step 3: Cross multiply
    20,795.40x = 31,206.78 × 7,647.93
  4. Step 4: Simplify right side
    20,795.40x = 238,667,268.97
  5. Step 5: Solve for x
    x = 238,667,268.97/20,795.40
  6. Step 6: Final answer
    x = 11,476.93

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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.