Home / 11,770.04-17,622.10-8,640.20

Finding the Fourth Proportional to 11,770.04, 17,622.10 and 8,640.20

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Solution

The fourth proportional to 11,770.04, 17,622.10 and 8,640.20 is: 12,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,770.04 : 17,622.10 = 8,640.20 : x
  2. Step 2: Convert to fraction form
    11,770.04/17,622.10 = 8,640.20/x
  3. Step 3: Cross multiply
    11,770.04x = 17,622.10 × 8,640.20
  4. Step 4: Simplify right side
    11,770.04x = 152,258,468.42
  5. Step 5: Solve for x
    x = 152,258,468.42/11,770.04
  6. Step 6: Final answer
    x = 12,936.10

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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.