Home / 19,683.06-29,515.70-5,639.87

Finding the Fourth Proportional to 19,683.06, 29,515.70 and 5,639.87

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Solution

The fourth proportional to 19,683.06, 29,515.70 and 5,639.87 is: 8,457.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,683.06 : 29,515.70 = 5,639.87 : x
  2. Step 2: Convert to fraction form
    19,683.06/29,515.70 = 5,639.87/x
  3. Step 3: Cross multiply
    19,683.06x = 29,515.70 × 5,639.87
  4. Step 4: Simplify right side
    19,683.06x = 166,464,767.12
  5. Step 5: Solve for x
    x = 166,464,767.12/19,683.06
  6. Step 6: Final answer
    x = 8,457.26

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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.