Home / 18,945.05-28,417.72-8,412.24

Finding the Fourth Proportional to 18,945.05, 28,417.72 and 8,412.24

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Solution

The fourth proportional to 18,945.05, 28,417.72 and 8,412.24 is: 12,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.05 : 28,417.72 = 8,412.24 : x
  2. Step 2: Convert to fraction form
    18,945.05/28,417.72 = 8,412.24/x
  3. Step 3: Cross multiply
    18,945.05x = 28,417.72 × 8,412.24
  4. Step 4: Simplify right side
    18,945.05x = 239,056,538.80
  5. Step 5: Solve for x
    x = 239,056,538.80/18,945.05
  6. Step 6: Final answer
    x = 12,618.42

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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.