Home / 20,942.16-31,335.46-11,714.64

Finding the Fourth Proportional to 20,942.16, 31,335.46 and 11,714.64

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Solution

The fourth proportional to 20,942.16, 31,335.46 and 11,714.64 is: 17,528.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.16 : 31,335.46 = 11,714.64 : x
  2. Step 2: Convert to fraction form
    20,942.16/31,335.46 = 11,714.64/x
  3. Step 3: Cross multiply
    20,942.16x = 31,335.46 × 11,714.64
  4. Step 4: Simplify right side
    20,942.16x = 367,083,633.13
  5. Step 5: Solve for x
    x = 367,083,633.13/20,942.16
  6. Step 6: Final answer
    x = 17,528.45

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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.