Home / 39,284.17-54,212.30-21,379.39

Finding the Fourth Proportional to 39,284.17, 54,212.30 and 21,379.39

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Solution

The fourth proportional to 39,284.17, 54,212.30 and 21,379.39 is: 29,503.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,284.17 : 54,212.30 = 21,379.39 : x
  2. Step 2: Convert to fraction form
    39,284.17/54,212.30 = 21,379.39/x
  3. Step 3: Cross multiply
    39,284.17x = 54,212.30 × 21,379.39
  4. Step 4: Simplify right side
    39,284.17x = 1,159,025,797.60
  5. Step 5: Solve for x
    x = 1,159,025,797.60/39,284.17
  6. Step 6: Final answer
    x = 29,503.63

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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.