Home / 20,266.21-27,964.51-11,312.47

Finding the Fourth Proportional to 20,266.21, 27,964.51 and 11,312.47

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Solution

The fourth proportional to 20,266.21, 27,964.51 and 11,312.47 is: 15,609.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.21 : 27,964.51 = 11,312.47 : x
  2. Step 2: Convert to fraction form
    20,266.21/27,964.51 = 11,312.47/x
  3. Step 3: Cross multiply
    20,266.21x = 27,964.51 × 11,312.47
  4. Step 4: Simplify right side
    20,266.21x = 316,347,680.44
  5. Step 5: Solve for x
    x = 316,347,680.44/20,266.21
  6. Step 6: Final answer
    x = 15,609.61

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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.