Home / 20,211.05-30,304.81-7,731.93

Finding the Fourth Proportional to 20,211.05, 30,304.81 and 7,731.93

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Solution

The fourth proportional to 20,211.05, 30,304.81 and 7,731.93 is: 11,593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.05 : 30,304.81 = 7,731.93 : x
  2. Step 2: Convert to fraction form
    20,211.05/30,304.81 = 7,731.93/x
  3. Step 3: Cross multiply
    20,211.05x = 30,304.81 × 7,731.93
  4. Step 4: Simplify right side
    20,211.05x = 234,314,792.89
  5. Step 5: Solve for x
    x = 234,314,792.89/20,211.05
  6. Step 6: Final answer
    x = 11,593.40

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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.