Home / 20,266.75-27,964.05-11,312.83

Finding the Fourth Proportional to 20,266.75, 27,964.05 and 11,312.83

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Solution

The fourth proportional to 20,266.75, 27,964.05 and 11,312.83 is: 15,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.75 : 27,964.05 = 11,312.83 : x
  2. Step 2: Convert to fraction form
    20,266.75/27,964.05 = 11,312.83/x
  3. Step 3: Cross multiply
    20,266.75x = 27,964.05 × 11,312.83
  4. Step 4: Simplify right side
    20,266.75x = 316,352,403.94
  5. Step 5: Solve for x
    x = 316,352,403.94/20,266.75
  6. Step 6: Final answer
    x = 15,609.43

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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.