Home / 19,683.81-29,516.82-5,640.62

Finding the Fourth Proportional to 19,683.81, 29,516.82 and 5,640.62

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Solution

The fourth proportional to 19,683.81, 29,516.82 and 5,640.62 is: 8,458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,683.81 : 29,516.82 = 5,640.62 : x
  2. Step 2: Convert to fraction form
    19,683.81/29,516.82 = 5,640.62/x
  3. Step 3: Cross multiply
    19,683.81x = 29,516.82 × 5,640.62
  4. Step 4: Simplify right side
    19,683.81x = 166,493,239.02
  5. Step 5: Solve for x
    x = 166,493,239.02/19,683.81
  6. Step 6: Final answer
    x = 8,458.38

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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.