Home / 34,279.88-47,311.70-20,129.99

Finding the Fourth Proportional to 34,279.88, 47,311.70 and 20,129.99

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Solution

The fourth proportional to 34,279.88, 47,311.70 and 20,129.99 is: 27,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,279.88 : 47,311.70 = 20,129.99 : x
  2. Step 2: Convert to fraction form
    34,279.88/47,311.70 = 20,129.99/x
  3. Step 3: Cross multiply
    34,279.88x = 47,311.70 × 20,129.99
  4. Step 4: Simplify right side
    34,279.88x = 952,383,710.67
  5. Step 5: Solve for x
    x = 952,383,710.67/34,279.88
  6. Step 6: Final answer
    x = 27,782.59

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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.