Home / 21,503.08-32,171.16-18,850.63

Finding the Fourth Proportional to 21,503.08, 32,171.16 and 18,850.63

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Solution

The fourth proportional to 21,503.08, 32,171.16 and 18,850.63 is: 28,202.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,503.08 : 32,171.16 = 18,850.63 : x
  2. Step 2: Convert to fraction form
    21,503.08/32,171.16 = 18,850.63/x
  3. Step 3: Cross multiply
    21,503.08x = 32,171.16 × 18,850.63
  4. Step 4: Simplify right side
    21,503.08x = 606,446,633.83
  5. Step 5: Solve for x
    x = 606,446,633.83/21,503.08
  6. Step 6: Final answer
    x = 28,202.78

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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.