Home / 20,313.79-28,021.28-12,241.94

Finding the Fourth Proportional to 20,313.79, 28,021.28 and 12,241.94

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Solution

The fourth proportional to 20,313.79, 28,021.28 and 12,241.94 is: 16,886.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.79 : 28,021.28 = 12,241.94 : x
  2. Step 2: Convert to fraction form
    20,313.79/28,021.28 = 12,241.94/x
  3. Step 3: Cross multiply
    20,313.79x = 28,021.28 × 12,241.94
  4. Step 4: Simplify right side
    20,313.79x = 343,034,627.17
  5. Step 5: Solve for x
    x = 343,034,627.17/20,313.79
  6. Step 6: Final answer
    x = 16,886.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.