Home / 20,160.42-30,124.49-15,390.33

Finding the Fourth Proportional to 20,160.42, 30,124.49 and 15,390.33

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Solution

The fourth proportional to 20,160.42, 30,124.49 and 15,390.33 is: 22,996.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.42 : 30,124.49 = 15,390.33 : x
  2. Step 2: Convert to fraction form
    20,160.42/30,124.49 = 15,390.33/x
  3. Step 3: Cross multiply
    20,160.42x = 30,124.49 × 15,390.33
  4. Step 4: Simplify right side
    20,160.42x = 463,625,765.23
  5. Step 5: Solve for x
    x = 463,625,765.23/20,160.42
  6. Step 6: Final answer
    x = 22,996.83

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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.