Home / 20,397.89-30,427.33-20,059.56

Finding the Fourth Proportional to 20,397.89, 30,427.33 and 20,059.56

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Solution

The fourth proportional to 20,397.89, 30,427.33 and 20,059.56 is: 29,922.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.89 : 30,427.33 = 20,059.56 : x
  2. Step 2: Convert to fraction form
    20,397.89/30,427.33 = 20,059.56/x
  3. Step 3: Cross multiply
    20,397.89x = 30,427.33 × 20,059.56
  4. Step 4: Simplify right side
    20,397.89x = 610,358,751.48
  5. Step 5: Solve for x
    x = 610,358,751.48/20,397.89
  6. Step 6: Final answer
    x = 29,922.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.