Home / 12,189.08-16,819.26-7,154.52

Finding the Fourth Proportional to 12,189.08, 16,819.26 and 7,154.52

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Solution

The fourth proportional to 12,189.08, 16,819.26 and 7,154.52 is: 9,872.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.08 : 16,819.26 = 7,154.52 : x
  2. Step 2: Convert to fraction form
    12,189.08/16,819.26 = 7,154.52/x
  3. Step 3: Cross multiply
    12,189.08x = 16,819.26 × 7,154.52
  4. Step 4: Simplify right side
    12,189.08x = 120,333,732.06
  5. Step 5: Solve for x
    x = 120,333,732.06/12,189.08
  6. Step 6: Final answer
    x = 9,872.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.