Home / 12,728.89-19,095.01-4,722.57

Finding the Fourth Proportional to 12,728.89, 19,095.01 and 4,722.57

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Solution

The fourth proportional to 12,728.89, 19,095.01 and 4,722.57 is: 7,084.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.89 : 19,095.01 = 4,722.57 : x
  2. Step 2: Convert to fraction form
    12,728.89/19,095.01 = 4,722.57/x
  3. Step 3: Cross multiply
    12,728.89x = 19,095.01 × 4,722.57
  4. Step 4: Simplify right side
    12,728.89x = 90,177,449.08
  5. Step 5: Solve for x
    x = 90,177,449.08/12,728.89
  6. Step 6: Final answer
    x = 7,084.47

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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.