Home / 20,707.44-31,199.47-18,735.59

Finding the Fourth Proportional to 20,707.44, 31,199.47 and 18,735.59

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Solution

The fourth proportional to 20,707.44, 31,199.47 and 18,735.59 is: 28,228.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.44 : 31,199.47 = 18,735.59 : x
  2. Step 2: Convert to fraction form
    20,707.44/31,199.47 = 18,735.59/x
  3. Step 3: Cross multiply
    20,707.44x = 31,199.47 × 18,735.59
  4. Step 4: Simplify right side
    20,707.44x = 584,540,478.14
  5. Step 5: Solve for x
    x = 584,540,478.14/20,707.44
  6. Step 6: Final answer
    x = 28,228.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.