Home / 18,826.20-28,243.98-13,290.33

Finding the Fourth Proportional to 18,826.20, 28,243.98 and 13,290.33

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Solution

The fourth proportional to 18,826.20, 28,243.98 and 13,290.33 is: 19,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,826.20 : 28,243.98 = 13,290.33 : x
  2. Step 2: Convert to fraction form
    18,826.20/28,243.98 = 13,290.33/x
  3. Step 3: Cross multiply
    18,826.20x = 28,243.98 × 13,290.33
  4. Step 4: Simplify right side
    18,826.20x = 375,371,814.71
  5. Step 5: Solve for x
    x = 375,371,814.71/18,826.20
  6. Step 6: Final answer
    x = 19,938.80

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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.