Home / 20,212.04-30,294.20-9,105.68

Finding the Fourth Proportional to 20,212.04, 30,294.20 and 9,105.68

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Solution

The fourth proportional to 20,212.04, 30,294.20 and 9,105.68 is: 13,647.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.04 : 30,294.20 = 9,105.68 : x
  2. Step 2: Convert to fraction form
    20,212.04/30,294.20 = 9,105.68/x
  3. Step 3: Cross multiply
    20,212.04x = 30,294.20 × 9,105.68
  4. Step 4: Simplify right side
    20,212.04x = 275,849,291.06
  5. Step 5: Solve for x
    x = 275,849,291.06/20,212.04
  6. Step 6: Final answer
    x = 13,647.77

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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.