Home / 20,210.68-30,306.03-12,213.69

Finding the Fourth Proportional to 20,210.68, 30,306.03 and 12,213.69

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Solution

The fourth proportional to 20,210.68, 30,306.03 and 12,213.69 is: 18,314.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.68 : 30,306.03 = 12,213.69 : x
  2. Step 2: Convert to fraction form
    20,210.68/30,306.03 = 12,213.69/x
  3. Step 3: Cross multiply
    20,210.68x = 30,306.03 × 12,213.69
  4. Step 4: Simplify right side
    20,210.68x = 370,148,455.55
  5. Step 5: Solve for x
    x = 370,148,455.55/20,210.68
  6. Step 6: Final answer
    x = 18,314.50

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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.