Home / 18,810.32-28,211.43-7,706.30

Finding the Fourth Proportional to 18,810.32, 28,211.43 and 7,706.30

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Solution

The fourth proportional to 18,810.32, 28,211.43 and 7,706.30 is: 11,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.32 : 28,211.43 = 7,706.30 : x
  2. Step 2: Convert to fraction form
    18,810.32/28,211.43 = 7,706.30/x
  3. Step 3: Cross multiply
    18,810.32x = 28,211.43 × 7,706.30
  4. Step 4: Simplify right side
    18,810.32x = 217,405,743.01
  5. Step 5: Solve for x
    x = 217,405,743.01/18,810.32
  6. Step 6: Final answer
    x = 11,557.79

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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.