Home / 20,035.81-27,672.10-13,651.32

Finding the Fourth Proportional to 20,035.81, 27,672.10 and 13,651.32

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Solution

The fourth proportional to 20,035.81, 27,672.10 and 13,651.32 is: 18,854.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,035.81 : 27,672.10 = 13,651.32 : x
  2. Step 2: Convert to fraction form
    20,035.81/27,672.10 = 13,651.32/x
  3. Step 3: Cross multiply
    20,035.81x = 27,672.10 × 13,651.32
  4. Step 4: Simplify right side
    20,035.81x = 377,760,692.17
  5. Step 5: Solve for x
    x = 377,760,692.17/20,035.81
  6. Step 6: Final answer
    x = 18,854.28

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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.