Home / 20,741.43-28,623.17-11,788.70

Finding the Fourth Proportional to 20,741.43, 28,623.17 and 11,788.70

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Solution

The fourth proportional to 20,741.43, 28,623.17 and 11,788.70 is: 16,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.43 : 28,623.17 = 11,788.70 : x
  2. Step 2: Convert to fraction form
    20,741.43/28,623.17 = 11,788.70/x
  3. Step 3: Cross multiply
    20,741.43x = 28,623.17 × 11,788.70
  4. Step 4: Simplify right side
    20,741.43x = 337,429,964.18
  5. Step 5: Solve for x
    x = 337,429,964.18/20,741.43
  6. Step 6: Final answer
    x = 16,268.40

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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.