Home / 18,743.79-28,124.85-8,212.37

Finding the Fourth Proportional to 18,743.79, 28,124.85 and 8,212.37

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Solution

The fourth proportional to 18,743.79, 28,124.85 and 8,212.37 is: 12,322.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.79 : 28,124.85 = 8,212.37 : x
  2. Step 2: Convert to fraction form
    18,743.79/28,124.85 = 8,212.37/x
  3. Step 3: Cross multiply
    18,743.79x = 28,124.85 × 8,212.37
  4. Step 4: Simplify right side
    18,743.79x = 230,971,533.77
  5. Step 5: Solve for x
    x = 230,971,533.77/18,743.79
  6. Step 6: Final answer
    x = 12,322.56

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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.