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Finding the Fourth Proportional to 18,672.39, 28,014.06 and 5,525.10

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Solution

The fourth proportional to 18,672.39, 28,014.06 and 5,525.10 is: 8,289.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.39 : 28,014.06 = 5,525.10 : x
  2. Step 2: Convert to fraction form
    18,672.39/28,014.06 = 5,525.10/x
  3. Step 3: Cross multiply
    18,672.39x = 28,014.06 × 5,525.10
  4. Step 4: Simplify right side
    18,672.39x = 154,780,482.91
  5. Step 5: Solve for x
    x = 154,780,482.91/18,672.39
  6. Step 6: Final answer
    x = 8,289.27

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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.