Home / 28,091.80-42,132.84-10,561.78

Finding the Fourth Proportional to 28,091.80, 42,132.84 and 10,561.78

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Solution

The fourth proportional to 28,091.80, 42,132.84 and 10,561.78 is: 15,840.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.80 : 42,132.84 = 10,561.78 : x
  2. Step 2: Convert to fraction form
    28,091.80/42,132.84 = 10,561.78/x
  3. Step 3: Cross multiply
    28,091.80x = 42,132.84 × 10,561.78
  4. Step 4: Simplify right side
    28,091.80x = 444,997,786.86
  5. Step 5: Solve for x
    x = 444,997,786.86/28,091.80
  6. Step 6: Final answer
    x = 15,840.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.