Home / 28,220.93-38,945.62-15,955.36

Finding the Fourth Proportional to 28,220.93, 38,945.62 and 15,955.36

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Solution

The fourth proportional to 28,220.93, 38,945.62 and 15,955.36 is: 22,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.93 : 38,945.62 = 15,955.36 : x
  2. Step 2: Convert to fraction form
    28,220.93/38,945.62 = 15,955.36/x
  3. Step 3: Cross multiply
    28,220.93x = 38,945.62 × 15,955.36
  4. Step 4: Simplify right side
    28,220.93x = 621,391,387.52
  5. Step 5: Solve for x
    x = 621,391,387.52/28,220.93
  6. Step 6: Final answer
    x = 22,018.81

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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.