Home / 20,926.19-28,865.89-14,131.91

Finding the Fourth Proportional to 20,926.19, 28,865.89 and 14,131.91

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Solution

The fourth proportional to 20,926.19, 28,865.89 and 14,131.91 is: 19,493.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.19 : 28,865.89 = 14,131.91 : x
  2. Step 2: Convert to fraction form
    20,926.19/28,865.89 = 14,131.91/x
  3. Step 3: Cross multiply
    20,926.19x = 28,865.89 × 14,131.91
  4. Step 4: Simplify right side
    20,926.19x = 407,930,159.55
  5. Step 5: Solve for x
    x = 407,930,159.55/20,926.19
  6. Step 6: Final answer
    x = 19,493.76

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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.