Home / 20,507.01-28,299.75-11,894.88

Finding the Fourth Proportional to 20,507.01, 28,299.75 and 11,894.88

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Solution

The fourth proportional to 20,507.01, 28,299.75 and 11,894.88 is: 16,414.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.01 : 28,299.75 = 11,894.88 : x
  2. Step 2: Convert to fraction form
    20,507.01/28,299.75 = 11,894.88/x
  3. Step 3: Cross multiply
    20,507.01x = 28,299.75 × 11,894.88
  4. Step 4: Simplify right side
    20,507.01x = 336,622,130.28
  5. Step 5: Solve for x
    x = 336,622,130.28/20,507.01
  6. Step 6: Final answer
    x = 16,414.98

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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.