Home / 13,784.80-20,678.64-8,589.28

Finding the Fourth Proportional to 13,784.80, 20,678.64 and 8,589.28

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Solution

The fourth proportional to 13,784.80, 20,678.64 and 8,589.28 is: 12,884.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.80 : 20,678.64 = 8,589.28 : x
  2. Step 2: Convert to fraction form
    13,784.80/20,678.64 = 8,589.28/x
  3. Step 3: Cross multiply
    13,784.80x = 20,678.64 × 8,589.28
  4. Step 4: Simplify right side
    13,784.80x = 177,614,628.98
  5. Step 5: Solve for x
    x = 177,614,628.98/13,784.80
  6. Step 6: Final answer
    x = 12,884.82

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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.