Home / 18,830.80-28,246.20-11,449.72

Finding the Fourth Proportional to 18,830.80, 28,246.20 and 11,449.72

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Solution

The fourth proportional to 18,830.80, 28,246.20 and 11,449.72 is: 17,174.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.80 : 28,246.20 = 11,449.72 : x
  2. Step 2: Convert to fraction form
    18,830.80/28,246.20 = 11,449.72/x
  3. Step 3: Cross multiply
    18,830.80x = 28,246.20 × 11,449.72
  4. Step 4: Simplify right side
    18,830.80x = 323,411,081.06
  5. Step 5: Solve for x
    x = 323,411,081.06/18,830.80
  6. Step 6: Final answer
    x = 17,174.58

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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.