Home / 18,990.55-28,503.24-9,637.21

Finding the Fourth Proportional to 18,990.55, 28,503.24 and 9,637.21

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Solution

The fourth proportional to 18,990.55, 28,503.24 and 9,637.21 is: 14,464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.55 : 28,503.24 = 9,637.21 : x
  2. Step 2: Convert to fraction form
    18,990.55/28,503.24 = 9,637.21/x
  3. Step 3: Cross multiply
    18,990.55x = 28,503.24 × 9,637.21
  4. Step 4: Simplify right side
    18,990.55x = 274,691,709.56
  5. Step 5: Solve for x
    x = 274,691,709.56/18,990.55
  6. Step 6: Final answer
    x = 14,464.65

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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.