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Finding the Fourth Proportional to 18,679.60, 28,051.80 and 18,096.40

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Solution

The fourth proportional to 18,679.60, 28,051.80 and 18,096.40 is: 27,175.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,679.60 : 28,051.80 = 18,096.40 : x
  2. Step 2: Convert to fraction form
    18,679.60/28,051.80 = 18,096.40/x
  3. Step 3: Cross multiply
    18,679.60x = 28,051.80 × 18,096.40
  4. Step 4: Simplify right side
    18,679.60x = 507,636,593.52
  5. Step 5: Solve for x
    x = 507,636,593.52/18,679.60
  6. Step 6: Final answer
    x = 27,175.99

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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.