Home / 12,775.30-19,050.13-11,221.66

Finding the Fourth Proportional to 12,775.30, 19,050.13 and 11,221.66

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Solution

The fourth proportional to 12,775.30, 19,050.13 and 11,221.66 is: 16,733.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.30 : 19,050.13 = 11,221.66 : x
  2. Step 2: Convert to fraction form
    12,775.30/19,050.13 = 11,221.66/x
  3. Step 3: Cross multiply
    12,775.30x = 19,050.13 × 11,221.66
  4. Step 4: Simplify right side
    12,775.30x = 213,774,081.82
  5. Step 5: Solve for x
    x = 213,774,081.82/12,775.30
  6. Step 6: Final answer
    x = 16,733.39

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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.