Home / 12,172.34-18,251.04-4,780.28

Finding the Fourth Proportional to 12,172.34, 18,251.04 and 4,780.28

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Solution

The fourth proportional to 12,172.34, 18,251.04 and 4,780.28 is: 7,167.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.34 : 18,251.04 = 4,780.28 : x
  2. Step 2: Convert to fraction form
    12,172.34/18,251.04 = 4,780.28/x
  3. Step 3: Cross multiply
    12,172.34x = 18,251.04 × 4,780.28
  4. Step 4: Simplify right side
    12,172.34x = 87,245,081.49
  5. Step 5: Solve for x
    x = 87,245,081.49/12,172.34
  6. Step 6: Final answer
    x = 7,167.49

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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.