Home / 18,666.50-28,004.47-5,518.85

Finding the Fourth Proportional to 18,666.50, 28,004.47 and 5,518.85

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Solution

The fourth proportional to 18,666.50, 28,004.47 and 5,518.85 is: 8,279.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.50 : 28,004.47 = 5,518.85 : x
  2. Step 2: Convert to fraction form
    18,666.50/28,004.47 = 5,518.85/x
  3. Step 3: Cross multiply
    18,666.50x = 28,004.47 × 5,518.85
  4. Step 4: Simplify right side
    18,666.50x = 154,552,315.44
  5. Step 5: Solve for x
    x = 154,552,315.44/18,666.50
  6. Step 6: Final answer
    x = 8,279.66

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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.