Home / 20,561.51-30,839.96-5,771.00

Finding the Fourth Proportional to 20,561.51, 30,839.96 and 5,771.00

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Solution

The fourth proportional to 20,561.51, 30,839.96 and 5,771.00 is: 8,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.51 : 30,839.96 = 5,771.00 : x
  2. Step 2: Convert to fraction form
    20,561.51/30,839.96 = 5,771.00/x
  3. Step 3: Cross multiply
    20,561.51x = 30,839.96 × 5,771.00
  4. Step 4: Simplify right side
    20,561.51x = 177,977,226.11
  5. Step 5: Solve for x
    x = 177,977,226.11/20,561.51
  6. Step 6: Final answer
    x = 8,655.85

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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.