Home / 20,020.25-30,041.09-12,998.61

Finding the Fourth Proportional to 20,020.25, 30,041.09 and 12,998.61

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Solution

The fourth proportional to 20,020.25, 30,041.09 and 12,998.61 is: 19,504.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.25 : 30,041.09 = 12,998.61 : x
  2. Step 2: Convert to fraction form
    20,020.25/30,041.09 = 12,998.61/x
  3. Step 3: Cross multiply
    20,020.25x = 30,041.09 × 12,998.61
  4. Step 4: Simplify right side
    20,020.25x = 390,492,412.88
  5. Step 5: Solve for x
    x = 390,492,412.88/20,020.25
  6. Step 6: Final answer
    x = 19,504.87

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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.