Home / 39,295.82-54,228.44-21,390.98

Finding the Fourth Proportional to 39,295.82, 54,228.44 and 21,390.98

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Solution

The fourth proportional to 39,295.82, 54,228.44 and 21,390.98 is: 29,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,295.82 : 54,228.44 = 21,390.98 : x
  2. Step 2: Convert to fraction form
    39,295.82/54,228.44 = 21,390.98/x
  3. Step 3: Cross multiply
    39,295.82x = 54,228.44 × 21,390.98
  4. Step 4: Simplify right side
    39,295.82x = 1,159,999,097.37
  5. Step 5: Solve for x
    x = 1,159,999,097.37/39,295.82
  6. Step 6: Final answer
    x = 29,519.66

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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.