Home / 39,795.66-54,916.83-21,890.66

Finding the Fourth Proportional to 39,795.66, 54,916.83 and 21,890.66

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Solution

The fourth proportional to 39,795.66, 54,916.83 and 21,890.66 is: 30,208.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,795.66 : 54,916.83 = 21,890.66 : x
  2. Step 2: Convert to fraction form
    39,795.66/54,916.83 = 21,890.66/x
  3. Step 3: Cross multiply
    39,795.66x = 54,916.83 × 21,890.66
  4. Step 4: Simplify right side
    39,795.66x = 1,202,165,379.22
  5. Step 5: Solve for x
    x = 1,202,165,379.22/39,795.66
  6. Step 6: Final answer
    x = 30,208.45

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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.