Home / 14,115.72-21,170.14-4,753.30

Finding the Fourth Proportional to 14,115.72, 21,170.14 and 4,753.30

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Solution

The fourth proportional to 14,115.72, 21,170.14 and 4,753.30 is: 7,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.72 : 21,170.14 = 4,753.30 : x
  2. Step 2: Convert to fraction form
    14,115.72/21,170.14 = 4,753.30/x
  3. Step 3: Cross multiply
    14,115.72x = 21,170.14 × 4,753.30
  4. Step 4: Simplify right side
    14,115.72x = 100,628,026.46
  5. Step 5: Solve for x
    x = 100,628,026.46/14,115.72
  6. Step 6: Final answer
    x = 7,128.79

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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.