Home / 18,990.35-28,503.41-9,637.09

Finding the Fourth Proportional to 18,990.35, 28,503.41 and 9,637.09

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Solution

The fourth proportional to 18,990.35, 28,503.41 and 9,637.09 is: 14,464.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.35 : 28,503.41 = 9,637.09 : x
  2. Step 2: Convert to fraction form
    18,990.35/28,503.41 = 9,637.09/x
  3. Step 3: Cross multiply
    18,990.35x = 28,503.41 × 9,637.09
  4. Step 4: Simplify right side
    18,990.35x = 274,689,927.48
  5. Step 5: Solve for x
    x = 274,689,927.48/18,990.35
  6. Step 6: Final answer
    x = 14,464.71

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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.