Home / 9,905.75-13,670.21-5,714.27

Finding the Fourth Proportional to 9,905.75, 13,670.21 and 5,714.27

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Solution

The fourth proportional to 9,905.75, 13,670.21 and 5,714.27 is: 7,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.75 : 13,670.21 = 5,714.27 : x
  2. Step 2: Convert to fraction form
    9,905.75/13,670.21 = 5,714.27/x
  3. Step 3: Cross multiply
    9,905.75x = 13,670.21 × 5,714.27
  4. Step 4: Simplify right side
    9,905.75x = 78,115,270.90
  5. Step 5: Solve for x
    x = 78,115,270.90/9,905.75
  6. Step 6: Final answer
    x = 7,885.85

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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.