Home / 39,284.70-54,211.26-21,379.74

Finding the Fourth Proportional to 39,284.70, 54,211.26 and 21,379.74

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Solution

The fourth proportional to 39,284.70, 54,211.26 and 21,379.74 is: 29,503.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,284.70 : 54,211.26 = 21,379.74 : x
  2. Step 2: Convert to fraction form
    39,284.70/54,211.26 = 21,379.74/x
  3. Step 3: Cross multiply
    39,284.70x = 54,211.26 × 21,379.74
  4. Step 4: Simplify right side
    39,284.70x = 1,159,022,643.87
  5. Step 5: Solve for x
    x = 1,159,022,643.87/39,284.70
  6. Step 6: Final answer
    x = 29,503.16

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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.