Home / 18,830.58-28,243.68-4,980.66

Finding the Fourth Proportional to 18,830.58, 28,243.68 and 4,980.66

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Solution

The fourth proportional to 18,830.58, 28,243.68 and 4,980.66 is: 7,470.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.58 : 28,243.68 = 4,980.66 : x
  2. Step 2: Convert to fraction form
    18,830.58/28,243.68 = 4,980.66/x
  3. Step 3: Cross multiply
    18,830.58x = 28,243.68 × 4,980.66
  4. Step 4: Simplify right side
    18,830.58x = 140,672,167.23
  5. Step 5: Solve for x
    x = 140,672,167.23/18,830.58
  6. Step 6: Final answer
    x = 7,470.41

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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.