Home / 20,211.68-30,307.53-12,214.69

Finding the Fourth Proportional to 20,211.68, 30,307.53 and 12,214.69

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Solution

The fourth proportional to 20,211.68, 30,307.53 and 12,214.69 is: 18,316.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.68 : 30,307.53 = 12,214.69 : x
  2. Step 2: Convert to fraction form
    20,211.68/30,307.53 = 12,214.69/x
  3. Step 3: Cross multiply
    20,211.68x = 30,307.53 × 12,214.69
  4. Step 4: Simplify right side
    20,211.68x = 370,197,083.62
  5. Step 5: Solve for x
    x = 370,197,083.62/20,211.68
  6. Step 6: Final answer
    x = 18,316.00

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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.