Home / 12,666.76-18,907.38-11,170.45

Finding the Fourth Proportional to 12,666.76, 18,907.38 and 11,170.45

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Solution

The fourth proportional to 12,666.76, 18,907.38 and 11,170.45 is: 16,673.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.76 : 18,907.38 = 11,170.45 : x
  2. Step 2: Convert to fraction form
    12,666.76/18,907.38 = 11,170.45/x
  3. Step 3: Cross multiply
    12,666.76x = 18,907.38 × 11,170.45
  4. Step 4: Simplify right side
    12,666.76x = 211,203,890.82
  5. Step 5: Solve for x
    x = 211,203,890.82/12,666.76
  6. Step 6: Final answer
    x = 16,673.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.