Home / 18,975.19-28,460.11-11,933.74

Finding the Fourth Proportional to 18,975.19, 28,460.11 and 11,933.74

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Solution

The fourth proportional to 18,975.19, 28,460.11 and 11,933.74 is: 17,898.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.19 : 28,460.11 = 11,933.74 : x
  2. Step 2: Convert to fraction form
    18,975.19/28,460.11 = 11,933.74/x
  3. Step 3: Cross multiply
    18,975.19x = 28,460.11 × 11,933.74
  4. Step 4: Simplify right side
    18,975.19x = 339,635,553.11
  5. Step 5: Solve for x
    x = 339,635,553.11/18,975.19
  6. Step 6: Final answer
    x = 17,898.93

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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.