Home / 39,284.99-54,212.25-21,379.61

Finding the Fourth Proportional to 39,284.99, 54,212.25 and 21,379.61

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Solution

The fourth proportional to 39,284.99, 54,212.25 and 21,379.61 is: 29,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,284.99 : 54,212.25 = 21,379.61 : x
  2. Step 2: Convert to fraction form
    39,284.99/54,212.25 = 21,379.61/x
  3. Step 3: Cross multiply
    39,284.99x = 54,212.25 × 21,379.61
  4. Step 4: Simplify right side
    39,284.99x = 1,159,036,887.73
  5. Step 5: Solve for x
    x = 1,159,036,887.73/39,284.99
  6. Step 6: Final answer
    x = 29,503.30

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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.