Home / 20,827.01-28,741.90-11,752.78

Finding the Fourth Proportional to 20,827.01, 28,741.90 and 11,752.78

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Solution

The fourth proportional to 20,827.01, 28,741.90 and 11,752.78 is: 16,219.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.01 : 28,741.90 = 11,752.78 : x
  2. Step 2: Convert to fraction form
    20,827.01/28,741.90 = 11,752.78/x
  3. Step 3: Cross multiply
    20,827.01x = 28,741.90 × 11,752.78
  4. Step 4: Simplify right side
    20,827.01x = 337,797,227.48
  5. Step 5: Solve for x
    x = 337,797,227.48/20,827.01
  6. Step 6: Final answer
    x = 16,219.19

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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.