Home / 10,779.80-16,169.70-9,440.60

Finding the Fourth Proportional to 10,779.80, 16,169.70 and 9,440.60

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Solution

The fourth proportional to 10,779.80, 16,169.70 and 9,440.60 is: 14,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,779.80 : 16,169.70 = 9,440.60 : x
  2. Step 2: Convert to fraction form
    10,779.80/16,169.70 = 9,440.60/x
  3. Step 3: Cross multiply
    10,779.80x = 16,169.70 × 9,440.60
  4. Step 4: Simplify right side
    10,779.80x = 152,651,669.82
  5. Step 5: Solve for x
    x = 152,651,669.82/10,779.80
  6. Step 6: Final answer
    x = 14,160.90

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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.