Home / 18,936.93-28,405.38-18,909.57

Finding the Fourth Proportional to 18,936.93, 28,405.38 and 18,909.57

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Solution

The fourth proportional to 18,936.93, 28,405.38 and 18,909.57 is: 28,364.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.93 : 28,405.38 = 18,909.57 : x
  2. Step 2: Convert to fraction form
    18,936.93/28,405.38 = 18,909.57/x
  3. Step 3: Cross multiply
    18,936.93x = 28,405.38 × 18,909.57
  4. Step 4: Simplify right side
    18,936.93x = 537,133,521.49
  5. Step 5: Solve for x
    x = 537,133,521.49/18,936.93
  6. Step 6: Final answer
    x = 28,364.34

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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.