Home / 10,780.20-16,170.30-3,853.32

Finding the Fourth Proportional to 10,780.20, 16,170.30 and 3,853.32

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Solution

The fourth proportional to 10,780.20, 16,170.30 and 3,853.32 is: 5,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.20 : 16,170.30 = 3,853.32 : x
  2. Step 2: Convert to fraction form
    10,780.20/16,170.30 = 3,853.32/x
  3. Step 3: Cross multiply
    10,780.20x = 16,170.30 × 3,853.32
  4. Step 4: Simplify right side
    10,780.20x = 62,309,340.40
  5. Step 5: Solve for x
    x = 62,309,340.40/10,780.20
  6. Step 6: Final answer
    x = 5,779.98

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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.