Home / 39,395.70-54,366.80-21,491.33

Finding the Fourth Proportional to 39,395.70, 54,366.80 and 21,491.33

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Solution

The fourth proportional to 39,395.70, 54,366.80 and 21,491.33 is: 29,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,395.70 : 54,366.80 = 21,491.33 : x
  2. Step 2: Convert to fraction form
    39,395.70/54,366.80 = 21,491.33/x
  3. Step 3: Cross multiply
    39,395.70x = 54,366.80 × 21,491.33
  4. Step 4: Simplify right side
    39,395.70x = 1,168,414,460.55
  5. Step 5: Solve for x
    x = 1,168,414,460.55/39,395.70
  6. Step 6: Final answer
    x = 29,658.43

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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.