Home / 11,421.72-17,127.36-4,753.44

Finding the Fourth Proportional to 11,421.72, 17,127.36 and 4,753.44

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Solution

The fourth proportional to 11,421.72, 17,127.36 and 4,753.44 is: 7,127.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.72 : 17,127.36 = 4,753.44 : x
  2. Step 2: Convert to fraction form
    11,421.72/17,127.36 = 4,753.44/x
  3. Step 3: Cross multiply
    11,421.72x = 17,127.36 × 4,753.44
  4. Step 4: Simplify right side
    11,421.72x = 81,413,878.12
  5. Step 5: Solve for x
    x = 81,413,878.12/11,421.72
  6. Step 6: Final answer
    x = 7,127.99

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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.