Home / 16,779.80-25,169.70-6,390.20

Finding the Fourth Proportional to 16,779.80, 25,169.70 and 6,390.20

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Solution

The fourth proportional to 16,779.80, 25,169.70 and 6,390.20 is: 9,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,779.80 : 25,169.70 = 6,390.20 : x
  2. Step 2: Convert to fraction form
    16,779.80/25,169.70 = 6,390.20/x
  3. Step 3: Cross multiply
    16,779.80x = 25,169.70 × 6,390.20
  4. Step 4: Simplify right side
    16,779.80x = 160,839,416.94
  5. Step 5: Solve for x
    x = 160,839,416.94/16,779.80
  6. Step 6: Final answer
    x = 9,585.30

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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.