Home / 15,964.80-23,947.20-4,279.20

Finding the Fourth Proportional to 15,964.80, 23,947.20 and 4,279.20

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Solution

The fourth proportional to 15,964.80, 23,947.20 and 4,279.20 is: 6,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,964.80 : 23,947.20 = 4,279.20 : x
  2. Step 2: Convert to fraction form
    15,964.80/23,947.20 = 4,279.20/x
  3. Step 3: Cross multiply
    15,964.80x = 23,947.20 × 4,279.20
  4. Step 4: Simplify right side
    15,964.80x = 102,474,858.24
  5. Step 5: Solve for x
    x = 102,474,858.24/15,964.80
  6. Step 6: Final answer
    x = 6,418.80

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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.