Home / 28,920.60-43,382.10-9,198.60

Finding the Fourth Proportional to 28,920.60, 43,382.10 and 9,198.60

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Solution

The fourth proportional to 28,920.60, 43,382.10 and 9,198.60 is: 13,798.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.60 : 43,382.10 = 9,198.60 : x
  2. Step 2: Convert to fraction form
    28,920.60/43,382.10 = 9,198.60/x
  3. Step 3: Cross multiply
    28,920.60x = 43,382.10 × 9,198.60
  4. Step 4: Simplify right side
    28,920.60x = 399,054,585.06
  5. Step 5: Solve for x
    x = 399,054,585.06/28,920.60
  6. Step 6: Final answer
    x = 13,798.28

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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.