Home / 39,626.10-54,683.67-21,721.05

Finding the Fourth Proportional to 39,626.10, 54,683.67 and 21,721.05

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Solution

The fourth proportional to 39,626.10, 54,683.67 and 21,721.05 is: 29,974.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,626.10 : 54,683.67 = 21,721.05 : x
  2. Step 2: Convert to fraction form
    39,626.10/54,683.67 = 21,721.05/x
  3. Step 3: Cross multiply
    39,626.10x = 54,683.67 × 21,721.05
  4. Step 4: Simplify right side
    39,626.10x = 1,187,786,730.25
  5. Step 5: Solve for x
    x = 1,187,786,730.25/39,626.10
  6. Step 6: Final answer
    x = 29,974.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.