Home / 21,157.69-31,739.61-6,367.76

Finding the Fourth Proportional to 21,157.69, 31,739.61 and 6,367.76

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Solution

The fourth proportional to 21,157.69, 31,739.61 and 6,367.76 is: 9,552.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.69 : 31,739.61 = 6,367.76 : x
  2. Step 2: Convert to fraction form
    21,157.69/31,739.61 = 6,367.76/x
  3. Step 3: Cross multiply
    21,157.69x = 31,739.61 × 6,367.76
  4. Step 4: Simplify right side
    21,157.69x = 202,110,133.85
  5. Step 5: Solve for x
    x = 202,110,133.85/21,157.69
  6. Step 6: Final answer
    x = 9,552.56

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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.