Home / 20,588.13-28,412.85-11,635.42

Finding the Fourth Proportional to 20,588.13, 28,412.85 and 11,635.42

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Solution

The fourth proportional to 20,588.13, 28,412.85 and 11,635.42 is: 16,057.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.13 : 28,412.85 = 11,635.42 : x
  2. Step 2: Convert to fraction form
    20,588.13/28,412.85 = 11,635.42/x
  3. Step 3: Cross multiply
    20,588.13x = 28,412.85 × 11,635.42
  4. Step 4: Simplify right side
    20,588.13x = 330,595,443.15
  5. Step 5: Solve for x
    x = 330,595,443.15/20,588.13
  6. Step 6: Final answer
    x = 16,057.58

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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.