Home / 20,926.07-28,865.72-14,131.79

Finding the Fourth Proportional to 20,926.07, 28,865.72 and 14,131.79

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Solution

The fourth proportional to 20,926.07, 28,865.72 and 14,131.79 is: 19,493.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.07 : 28,865.72 = 14,131.79 : x
  2. Step 2: Convert to fraction form
    20,926.07/28,865.72 = 14,131.79/x
  3. Step 3: Cross multiply
    20,926.07x = 28,865.72 × 14,131.79
  4. Step 4: Simplify right side
    20,926.07x = 407,924,078.25
  5. Step 5: Solve for x
    x = 407,924,078.25/20,926.07
  6. Step 6: Final answer
    x = 19,493.59

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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.