Home / 12,910.51-19,385.21-11,277.55

Finding the Fourth Proportional to 12,910.51, 19,385.21 and 11,277.55

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Solution

The fourth proportional to 12,910.51, 19,385.21 and 11,277.55 is: 16,933.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.51 : 19,385.21 = 11,277.55 : x
  2. Step 2: Convert to fraction form
    12,910.51/19,385.21 = 11,277.55/x
  3. Step 3: Cross multiply
    12,910.51x = 19,385.21 × 11,277.55
  4. Step 4: Simplify right side
    12,910.51x = 218,617,675.04
  5. Step 5: Solve for x
    x = 218,617,675.04/12,910.51
  6. Step 6: Final answer
    x = 16,933.31

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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.