Home / 10,139.01-13,890.20-9,759.96

Finding the Fourth Proportional to 10,139.01, 13,890.20 and 9,759.96

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Solution

The fourth proportional to 10,139.01, 13,890.20 and 9,759.96 is: 13,370.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.01 : 13,890.20 = 9,759.96 : x
  2. Step 2: Convert to fraction form
    10,139.01/13,890.20 = 9,759.96/x
  3. Step 3: Cross multiply
    10,139.01x = 13,890.20 × 9,759.96
  4. Step 4: Simplify right side
    10,139.01x = 135,567,872.88
  5. Step 5: Solve for x
    x = 135,567,872.88/10,139.01
  6. Step 6: Final answer
    x = 13,370.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.