Home / 20,740.07-31,110.09-5,157.69

Finding the Fourth Proportional to 20,740.07, 31,110.09 and 5,157.69

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Solution

The fourth proportional to 20,740.07, 31,110.09 and 5,157.69 is: 7,736.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.07 : 31,110.09 = 5,157.69 : x
  2. Step 2: Convert to fraction form
    20,740.07/31,110.09 = 5,157.69/x
  3. Step 3: Cross multiply
    20,740.07x = 31,110.09 × 5,157.69
  4. Step 4: Simplify right side
    20,740.07x = 160,456,200.09
  5. Step 5: Solve for x
    x = 160,456,200.09/20,740.07
  6. Step 6: Final answer
    x = 7,736.53

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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.