Home / 20,019.92-30,045.28-18,992.12

Finding the Fourth Proportional to 20,019.92, 30,045.28 and 18,992.12

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Solution

The fourth proportional to 20,019.92, 30,045.28 and 18,992.12 is: 28,502.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,019.92 : 30,045.28 = 18,992.12 : x
  2. Step 2: Convert to fraction form
    20,019.92/30,045.28 = 18,992.12/x
  3. Step 3: Cross multiply
    20,019.92x = 30,045.28 × 18,992.12
  4. Step 4: Simplify right side
    20,019.92x = 570,623,563.19
  5. Step 5: Solve for x
    x = 570,623,563.19/20,019.92
  6. Step 6: Final answer
    x = 28,502.79

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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.