Home / 39,139.10-54,012.08-21,234.26

Finding the Fourth Proportional to 39,139.10, 54,012.08 and 21,234.26

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Solution

The fourth proportional to 39,139.10, 54,012.08 and 21,234.26 is: 29,303.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139.10 : 54,012.08 = 21,234.26 : x
  2. Step 2: Convert to fraction form
    39,139.10/54,012.08 = 21,234.26/x
  3. Step 3: Cross multiply
    39,139.10x = 54,012.08 × 21,234.26
  4. Step 4: Simplify right side
    39,139.10x = 1,146,906,213.44
  5. Step 5: Solve for x
    x = 1,146,906,213.44/39,139.10
  6. Step 6: Final answer
    x = 29,303.33

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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.