Home / 28,543.92-39,390.68-15,797.98

Finding the Fourth Proportional to 28,543.92, 39,390.68 and 15,797.98

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Solution

The fourth proportional to 28,543.92, 39,390.68 and 15,797.98 is: 21,801.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.92 : 39,390.68 = 15,797.98 : x
  2. Step 2: Convert to fraction form
    28,543.92/39,390.68 = 15,797.98/x
  3. Step 3: Cross multiply
    28,543.92x = 39,390.68 × 15,797.98
  4. Step 4: Simplify right side
    28,543.92x = 622,292,997.36
  5. Step 5: Solve for x
    x = 622,292,997.36/28,543.92
  6. Step 6: Final answer
    x = 21,801.25

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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.