Home / 20,447.51-30,505.01-18,537.66

Finding the Fourth Proportional to 20,447.51, 30,505.01 and 18,537.66

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Solution

The fourth proportional to 20,447.51, 30,505.01 and 18,537.66 is: 27,655.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.51 : 30,505.01 = 18,537.66 : x
  2. Step 2: Convert to fraction form
    20,447.51/30,505.01 = 18,537.66/x
  3. Step 3: Cross multiply
    20,447.51x = 30,505.01 × 18,537.66
  4. Step 4: Simplify right side
    20,447.51x = 565,491,410.99
  5. Step 5: Solve for x
    x = 565,491,410.99/20,447.51
  6. Step 6: Final answer
    x = 27,655.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.