Home / 11,421.28-17,127.60-4,492

Finding the Fourth Proportional to 11,421.28, 17,127.60 and 4,492

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Solution

The fourth proportional to 11,421.28, 17,127.60 and 4,492 is: 6,736.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.28 : 17,127.60 = 4,492 : x
  2. Step 2: Convert to fraction form
    11,421.28/17,127.60 = 4,492/x
  3. Step 3: Cross multiply
    11,421.28x = 17,127.60 × 4,492
  4. Step 4: Simplify right side
    11,421.28x = 76,937,179.20
  5. Step 5: Solve for x
    x = 76,937,179.20/11,421.28
  6. Step 6: Final answer
    x = 6,736.30

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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.