Home / 18,830.43-28,229.55-7,730.19

Finding the Fourth Proportional to 18,830.43, 28,229.55 and 7,730.19

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Solution

The fourth proportional to 18,830.43, 28,229.55 and 7,730.19 is: 11,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.43 : 28,229.55 = 7,730.19 : x
  2. Step 2: Convert to fraction form
    18,830.43/28,229.55 = 7,730.19/x
  3. Step 3: Cross multiply
    18,830.43x = 28,229.55 × 7,730.19
  4. Step 4: Simplify right side
    18,830.43x = 218,219,785.11
  5. Step 5: Solve for x
    x = 218,219,785.11/18,830.43
  6. Step 6: Final answer
    x = 11,588.68

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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.