Home / 12,909.51-19,383.71-11,276.55

Finding the Fourth Proportional to 12,909.51, 19,383.71 and 11,276.55

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Solution

The fourth proportional to 12,909.51, 19,383.71 and 11,276.55 is: 16,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.51 : 19,383.71 = 11,276.55 : x
  2. Step 2: Convert to fraction form
    12,909.51/19,383.71 = 11,276.55/x
  3. Step 3: Cross multiply
    12,909.51x = 19,383.71 × 11,276.55
  4. Step 4: Simplify right side
    12,909.51x = 218,581,318.62
  5. Step 5: Solve for x
    x = 218,581,318.62/12,909.51
  6. Step 6: Final answer
    x = 16,931.81

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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.