Home / 20,187.48-30,207.41-11,871.42

Finding the Fourth Proportional to 20,187.48, 30,207.41 and 11,871.42

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Solution

The fourth proportional to 20,187.48, 30,207.41 and 11,871.42 is: 17,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.48 : 30,207.41 = 11,871.42 : x
  2. Step 2: Convert to fraction form
    20,187.48/30,207.41 = 11,871.42/x
  3. Step 3: Cross multiply
    20,187.48x = 30,207.41 × 11,871.42
  4. Step 4: Simplify right side
    20,187.48x = 358,604,851.22
  5. Step 5: Solve for x
    x = 358,604,851.22/20,187.48
  6. Step 6: Final answer
    x = 17,763.73

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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.