Home / 18,975.20-28,460.12-11,933.74

Finding the Fourth Proportional to 18,975.20, 28,460.12 and 11,933.74

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Solution

The fourth proportional to 18,975.20, 28,460.12 and 11,933.74 is: 17,898.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.20 : 28,460.12 = 11,933.74 : x
  2. Step 2: Convert to fraction form
    18,975.20/28,460.12 = 11,933.74/x
  3. Step 3: Cross multiply
    18,975.20x = 28,460.12 × 11,933.74
  4. Step 4: Simplify right side
    18,975.20x = 339,635,672.45
  5. Step 5: Solve for x
    x = 339,635,672.45/18,975.20
  6. Step 6: Final answer
    x = 17,898.92

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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.