Home / 20,357.77-28,094.87-11,408.15

Finding the Fourth Proportional to 20,357.77, 28,094.87 and 11,408.15

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Solution

The fourth proportional to 20,357.77, 28,094.87 and 11,408.15 is: 15,743.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.77 : 28,094.87 = 11,408.15 : x
  2. Step 2: Convert to fraction form
    20,357.77/28,094.87 = 11,408.15/x
  3. Step 3: Cross multiply
    20,357.77x = 28,094.87 × 11,408.15
  4. Step 4: Simplify right side
    20,357.77x = 320,510,434.15
  5. Step 5: Solve for x
    x = 320,510,434.15/20,357.77
  6. Step 6: Final answer
    x = 15,743.89

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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.