Home / 34,279.20-51,418.80-21,157.20

Finding the Fourth Proportional to 34,279.20, 51,418.80 and 21,157.20

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Solution

The fourth proportional to 34,279.20, 51,418.80 and 21,157.20 is: 31,735.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,279.20 : 51,418.80 = 21,157.20 : x
  2. Step 2: Convert to fraction form
    34,279.20/51,418.80 = 21,157.20/x
  3. Step 3: Cross multiply
    34,279.20x = 51,418.80 × 21,157.20
  4. Step 4: Simplify right side
    34,279.20x = 1,087,877,835.36
  5. Step 5: Solve for x
    x = 1,087,877,835.36/34,279.20
  6. Step 6: Final answer
    x = 31,735.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.