Home / 20,666.64-28,523.08-12,604.97

Finding the Fourth Proportional to 20,666.64, 28,523.08 and 12,604.97

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Solution

The fourth proportional to 20,666.64, 28,523.08 and 12,604.97 is: 17,396.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.64 : 28,523.08 = 12,604.97 : x
  2. Step 2: Convert to fraction form
    20,666.64/28,523.08 = 12,604.97/x
  3. Step 3: Cross multiply
    20,666.64x = 28,523.08 × 12,604.97
  4. Step 4: Simplify right side
    20,666.64x = 359,532,504.68
  5. Step 5: Solve for x
    x = 359,532,504.68/20,666.64
  6. Step 6: Final answer
    x = 17,396.76

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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.