Home / 27,638.80-41,458.20-9,168.40

Finding the Fourth Proportional to 27,638.80, 41,458.20 and 9,168.40

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Solution

The fourth proportional to 27,638.80, 41,458.20 and 9,168.40 is: 13,752.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.80 : 41,458.20 = 9,168.40 : x
  2. Step 2: Convert to fraction form
    27,638.80/41,458.20 = 9,168.40/x
  3. Step 3: Cross multiply
    27,638.80x = 41,458.20 × 9,168.40
  4. Step 4: Simplify right side
    27,638.80x = 380,105,360.88
  5. Step 5: Solve for x
    x = 380,105,360.88/27,638.80
  6. Step 6: Final answer
    x = 13,752.60

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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.