Home / 12,102.70-18,150.45-4,702.90

Finding the Fourth Proportional to 12,102.70, 18,150.45 and 4,702.90

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Solution

The fourth proportional to 12,102.70, 18,150.45 and 4,702.90 is: 7,052.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.70 : 18,150.45 = 4,702.90 : x
  2. Step 2: Convert to fraction form
    12,102.70/18,150.45 = 4,702.90/x
  3. Step 3: Cross multiply
    12,102.70x = 18,150.45 × 4,702.90
  4. Step 4: Simplify right side
    12,102.70x = 85,359,751.31
  5. Step 5: Solve for x
    x = 85,359,751.31/12,102.70
  6. Step 6: Final answer
    x = 7,052.95

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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.