Home / 20,427.87-30,588.33-13,385.73

Finding the Fourth Proportional to 20,427.87, 30,588.33 and 13,385.73

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Solution

The fourth proportional to 20,427.87, 30,588.33 and 13,385.73 is: 20,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.87 : 30,588.33 = 13,385.73 : x
  2. Step 2: Convert to fraction form
    20,427.87/30,588.33 = 13,385.73/x
  3. Step 3: Cross multiply
    20,427.87x = 30,588.33 × 13,385.73
  4. Step 4: Simplify right side
    20,427.87x = 409,447,126.53
  5. Step 5: Solve for x
    x = 409,447,126.53/20,427.87
  6. Step 6: Final answer
    x = 20,043.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.