Home / 12,450.90-18,675.27-4,128.18

Finding the Fourth Proportional to 12,450.90, 18,675.27 and 4,128.18

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Solution

The fourth proportional to 12,450.90, 18,675.27 and 4,128.18 is: 6,191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.90 : 18,675.27 = 4,128.18 : x
  2. Step 2: Convert to fraction form
    12,450.90/18,675.27 = 4,128.18/x
  3. Step 3: Cross multiply
    12,450.90x = 18,675.27 × 4,128.18
  4. Step 4: Simplify right side
    12,450.90x = 77,094,876.11
  5. Step 5: Solve for x
    x = 77,094,876.11/12,450.90
  6. Step 6: Final answer
    x = 6,191.91

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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.