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Finding the Fourth Proportional to 11,987.76, 17,984.22 and 4,592.21

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Solution

The fourth proportional to 11,987.76, 17,984.22 and 4,592.21 is: 6,889.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.76 : 17,984.22 = 4,592.21 : x
  2. Step 2: Convert to fraction form
    11,987.76/17,984.22 = 4,592.21/x
  3. Step 3: Cross multiply
    11,987.76x = 17,984.22 × 4,592.21
  4. Step 4: Simplify right side
    11,987.76x = 82,587,225.01
  5. Step 5: Solve for x
    x = 82,587,225.01/11,987.76
  6. Step 6: Final answer
    x = 6,889.30

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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.