Home / 13,777.78-20,666.22-5,986.60

Finding the Fourth Proportional to 13,777.78, 20,666.22 and 5,986.60

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Solution

The fourth proportional to 13,777.78, 20,666.22 and 5,986.60 is: 8,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.78 : 20,666.22 = 5,986.60 : x
  2. Step 2: Convert to fraction form
    13,777.78/20,666.22 = 5,986.60/x
  3. Step 3: Cross multiply
    13,777.78x = 20,666.22 × 5,986.60
  4. Step 4: Simplify right side
    13,777.78x = 123,720,392.65
  5. Step 5: Solve for x
    x = 123,720,392.65/13,777.78
  6. Step 6: Final answer
    x = 8,979.70

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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.