Home / 12,063.96-18,178.12-9,920.70

Finding the Fourth Proportional to 12,063.96, 18,178.12 and 9,920.70

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Solution

The fourth proportional to 12,063.96, 18,178.12 and 9,920.70 is: 14,948.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,063.96 : 18,178.12 = 9,920.70 : x
  2. Step 2: Convert to fraction form
    12,063.96/18,178.12 = 9,920.70/x
  3. Step 3: Cross multiply
    12,063.96x = 18,178.12 × 9,920.70
  4. Step 4: Simplify right side
    12,063.96x = 180,339,675.08
  5. Step 5: Solve for x
    x = 180,339,675.08/12,063.96
  6. Step 6: Final answer
    x = 14,948.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.