Home / 18,801.06-28,196.73-8,920.68

Finding the Fourth Proportional to 18,801.06, 28,196.73 and 8,920.68

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Solution

The fourth proportional to 18,801.06, 28,196.73 and 8,920.68 is: 13,378.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.06 : 28,196.73 = 8,920.68 : x
  2. Step 2: Convert to fraction form
    18,801.06/28,196.73 = 8,920.68/x
  3. Step 3: Cross multiply
    18,801.06x = 28,196.73 × 8,920.68
  4. Step 4: Simplify right side
    18,801.06x = 251,534,005.38
  5. Step 5: Solve for x
    x = 251,534,005.38/18,801.06
  6. Step 6: Final answer
    x = 13,378.71

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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.