Home / 18,942.01-28,416.10-6,460.78

Finding the Fourth Proportional to 18,942.01, 28,416.10 and 6,460.78

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Solution

The fourth proportional to 18,942.01, 28,416.10 and 6,460.78 is: 9,692.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.01 : 28,416.10 = 6,460.78 : x
  2. Step 2: Convert to fraction form
    18,942.01/28,416.10 = 6,460.78/x
  3. Step 3: Cross multiply
    18,942.01x = 28,416.10 × 6,460.78
  4. Step 4: Simplify right side
    18,942.01x = 183,590,170.56
  5. Step 5: Solve for x
    x = 183,590,170.56/18,942.01
  6. Step 6: Final answer
    x = 9,692.22

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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.