Home / 39,450.77-54,442.37-21,545.45

Finding the Fourth Proportional to 39,450.77, 54,442.37 and 21,545.45

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Solution

The fourth proportional to 39,450.77, 54,442.37 and 21,545.45 is: 29,732.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,450.77 : 54,442.37 = 21,545.45 : x
  2. Step 2: Convert to fraction form
    39,450.77/54,442.37 = 21,545.45/x
  3. Step 3: Cross multiply
    39,450.77x = 54,442.37 × 21,545.45
  4. Step 4: Simplify right side
    39,450.77x = 1,172,985,252.99
  5. Step 5: Solve for x
    x = 1,172,985,252.99/39,450.77
  6. Step 6: Final answer
    x = 29,732.89

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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.