Home / 28,552.73-39,400.29-15,805.92

Finding the Fourth Proportional to 28,552.73, 39,400.29 and 15,805.92

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Solution

The fourth proportional to 28,552.73, 39,400.29 and 15,805.92 is: 21,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,552.73 : 39,400.29 = 15,805.92 : x
  2. Step 2: Convert to fraction form
    28,552.73/39,400.29 = 15,805.92/x
  3. Step 3: Cross multiply
    28,552.73x = 39,400.29 × 15,805.92
  4. Step 4: Simplify right side
    28,552.73x = 622,757,831.72
  5. Step 5: Solve for x
    x = 622,757,831.72/28,552.73
  6. Step 6: Final answer
    x = 21,810.80

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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.