Home / 39,279.70-54,206.49-21,375.19

Finding the Fourth Proportional to 39,279.70, 54,206.49 and 21,375.19

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Solution

The fourth proportional to 39,279.70, 54,206.49 and 21,375.19 is: 29,498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.70 : 54,206.49 = 21,375.19 : x
  2. Step 2: Convert to fraction form
    39,279.70/54,206.49 = 21,375.19/x
  3. Step 3: Cross multiply
    39,279.70x = 54,206.49 × 21,375.19
  4. Step 4: Simplify right side
    39,279.70x = 1,158,674,022.98
  5. Step 5: Solve for x
    x = 1,158,674,022.98/39,279.70
  6. Step 6: Final answer
    x = 29,498.04

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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.