Home / 18,669.87-28,010.09-5,522.19

Finding the Fourth Proportional to 18,669.87, 28,010.09 and 5,522.19

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Solution

The fourth proportional to 18,669.87, 28,010.09 and 5,522.19 is: 8,284.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.87 : 28,010.09 = 5,522.19 : x
  2. Step 2: Convert to fraction form
    18,669.87/28,010.09 = 5,522.19/x
  3. Step 3: Cross multiply
    18,669.87x = 28,010.09 × 5,522.19
  4. Step 4: Simplify right side
    18,669.87x = 154,677,011.29
  5. Step 5: Solve for x
    x = 154,677,011.29/18,669.87
  6. Step 6: Final answer
    x = 8,284.85

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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.