Home / 18,776.80-28,168.85-5,628.07

Finding the Fourth Proportional to 18,776.80, 28,168.85 and 5,628.07

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Solution

The fourth proportional to 18,776.80, 28,168.85 and 5,628.07 is: 8,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,776.80 : 28,168.85 = 5,628.07 : x
  2. Step 2: Convert to fraction form
    18,776.80/28,168.85 = 5,628.07/x
  3. Step 3: Cross multiply
    18,776.80x = 28,168.85 × 5,628.07
  4. Step 4: Simplify right side
    18,776.80x = 158,536,231.48
  5. Step 5: Solve for x
    x = 158,536,231.48/18,776.80
  6. Step 6: Final answer
    x = 8,443.20

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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.