Home / 21,160.28-31,714.94-7,822.64

Finding the Fourth Proportional to 21,160.28, 31,714.94 and 7,822.64

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Solution

The fourth proportional to 21,160.28, 31,714.94 and 7,822.64 is: 11,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.28 : 31,714.94 = 7,822.64 : x
  2. Step 2: Convert to fraction form
    21,160.28/31,714.94 = 7,822.64/x
  3. Step 3: Cross multiply
    21,160.28x = 31,714.94 × 7,822.64
  4. Step 4: Simplify right side
    21,160.28x = 248,094,558.24
  5. Step 5: Solve for x
    x = 248,094,558.24/21,160.28
  6. Step 6: Final answer
    x = 11,724.54

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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.