Home / 12,279.04-18,420.48-4,072.96

Finding the Fourth Proportional to 12,279.04, 18,420.48 and 4,072.96

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Solution

The fourth proportional to 12,279.04, 18,420.48 and 4,072.96 is: 6,110.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.04 : 18,420.48 = 4,072.96 : x
  2. Step 2: Convert to fraction form
    12,279.04/18,420.48 = 4,072.96/x
  3. Step 3: Cross multiply
    12,279.04x = 18,420.48 × 4,072.96
  4. Step 4: Simplify right side
    12,279.04x = 75,025,878.22
  5. Step 5: Solve for x
    x = 75,025,878.22/12,279.04
  6. Step 6: Final answer
    x = 6,110.08

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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.