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Finding the Fourth Proportional to 18,615.40, 27,926.70 and 5,468.20

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Solution

The fourth proportional to 18,615.40, 27,926.70 and 5,468.20 is: 8,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.40 : 27,926.70 = 5,468.20 : x
  2. Step 2: Convert to fraction form
    18,615.40/27,926.70 = 5,468.20/x
  3. Step 3: Cross multiply
    18,615.40x = 27,926.70 × 5,468.20
  4. Step 4: Simplify right side
    18,615.40x = 152,708,780.94
  5. Step 5: Solve for x
    x = 152,708,780.94/18,615.40
  6. Step 6: Final answer
    x = 8,203.36

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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.