Home / 18,909.05-28,356.08-6,426.54

Finding the Fourth Proportional to 18,909.05, 28,356.08 and 6,426.54

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Solution

The fourth proportional to 18,909.05, 28,356.08 and 6,426.54 is: 9,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909.05 : 28,356.08 = 6,426.54 : x
  2. Step 2: Convert to fraction form
    18,909.05/28,356.08 = 6,426.54/x
  3. Step 3: Cross multiply
    18,909.05x = 28,356.08 × 6,426.54
  4. Step 4: Simplify right side
    18,909.05x = 182,231,450.23
  5. Step 5: Solve for x
    x = 182,231,450.23/18,909.05
  6. Step 6: Final answer
    x = 9,637.26

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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.