Home / 28,965.73-39,976.48-16,223.78

Finding the Fourth Proportional to 28,965.73, 39,976.48 and 16,223.78

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Solution

The fourth proportional to 28,965.73, 39,976.48 and 16,223.78 is: 22,390.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.73 : 39,976.48 = 16,223.78 : x
  2. Step 2: Convert to fraction form
    28,965.73/39,976.48 = 16,223.78/x
  3. Step 3: Cross multiply
    28,965.73x = 39,976.48 × 16,223.78
  4. Step 4: Simplify right side
    28,965.73x = 648,569,669.29
  5. Step 5: Solve for x
    x = 648,569,669.29/28,965.73
  6. Step 6: Final answer
    x = 22,390.93

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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.