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Finding the Fourth Proportional to 18,714.55, 28,056.92 and 10,808.07

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Solution

The fourth proportional to 18,714.55, 28,056.92 and 10,808.07 is: 16,203.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,714.55 : 28,056.92 = 10,808.07 : x
  2. Step 2: Convert to fraction form
    18,714.55/28,056.92 = 10,808.07/x
  3. Step 3: Cross multiply
    18,714.55x = 28,056.92 × 10,808.07
  4. Step 4: Simplify right side
    18,714.55x = 303,241,155.34
  5. Step 5: Solve for x
    x = 303,241,155.34/18,714.55
  6. Step 6: Final answer
    x = 16,203.50

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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.