Home / 20,866.56-31,263.40-17,379.04

Finding the Fourth Proportional to 20,866.56, 31,263.40 and 17,379.04

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Solution

The fourth proportional to 20,866.56, 31,263.40 and 17,379.04 is: 26,038.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.56 : 31,263.40 = 17,379.04 : x
  2. Step 2: Convert to fraction form
    20,866.56/31,263.40 = 17,379.04/x
  3. Step 3: Cross multiply
    20,866.56x = 31,263.40 × 17,379.04
  4. Step 4: Simplify right side
    20,866.56x = 543,327,879.14
  5. Step 5: Solve for x
    x = 543,327,879.14/20,866.56
  6. Step 6: Final answer
    x = 26,038.21

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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.