Home / 20,212.24-30,278.04-9,792.40

Finding the Fourth Proportional to 20,212.24, 30,278.04 and 9,792.40

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Solution

The fourth proportional to 20,212.24, 30,278.04 and 9,792.40 is: 14,669.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.24 : 30,278.04 = 9,792.40 : x
  2. Step 2: Convert to fraction form
    20,212.24/30,278.04 = 9,792.40/x
  3. Step 3: Cross multiply
    20,212.24x = 30,278.04 × 9,792.40
  4. Step 4: Simplify right side
    20,212.24x = 296,494,678.90
  5. Step 5: Solve for x
    x = 296,494,678.90/20,212.24
  6. Step 6: Final answer
    x = 14,669.07

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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.