Home / 20,309.12-28,027.98-11,356.44

Finding the Fourth Proportional to 20,309.12, 28,027.98 and 11,356.44

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Solution

The fourth proportional to 20,309.12, 28,027.98 and 11,356.44 is: 15,672.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.12 : 28,027.98 = 11,356.44 : x
  2. Step 2: Convert to fraction form
    20,309.12/28,027.98 = 11,356.44/x
  3. Step 3: Cross multiply
    20,309.12x = 28,027.98 × 11,356.44
  4. Step 4: Simplify right side
    20,309.12x = 318,298,073.19
  5. Step 5: Solve for x
    x = 318,298,073.19/20,309.12
  6. Step 6: Final answer
    x = 15,672.67

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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.