Home / 39,690.70-54,772.97-21,541.03

Finding the Fourth Proportional to 39,690.70, 54,772.97 and 21,541.03

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Solution

The fourth proportional to 39,690.70, 54,772.97 and 21,541.03 is: 29,726.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,690.70 : 54,772.97 = 21,541.03 : x
  2. Step 2: Convert to fraction form
    39,690.70/54,772.97 = 21,541.03/x
  3. Step 3: Cross multiply
    39,690.70x = 54,772.97 × 21,541.03
  4. Step 4: Simplify right side
    39,690.70x = 1,179,866,189.96
  5. Step 5: Solve for x
    x = 1,179,866,189.96/39,690.70
  6. Step 6: Final answer
    x = 29,726.52

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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.