Home / 18,836.42-28,211.90-10,821.06

Finding the Fourth Proportional to 18,836.42, 28,211.90 and 10,821.06

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Solution

The fourth proportional to 18,836.42, 28,211.90 and 10,821.06 is: 16,207.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.42 : 28,211.90 = 10,821.06 : x
  2. Step 2: Convert to fraction form
    18,836.42/28,211.90 = 10,821.06/x
  3. Step 3: Cross multiply
    18,836.42x = 28,211.90 × 10,821.06
  4. Step 4: Simplify right side
    18,836.42x = 305,282,608.51
  5. Step 5: Solve for x
    x = 305,282,608.51/18,836.42
  6. Step 6: Final answer
    x = 16,207.04

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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.