Home / 12,680.20-19,010.67-9,912.70

Finding the Fourth Proportional to 12,680.20, 19,010.67 and 9,912.70

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Solution

The fourth proportional to 12,680.20, 19,010.67 and 9,912.70 is: 14,861.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.20 : 19,010.67 = 9,912.70 : x
  2. Step 2: Convert to fraction form
    12,680.20/19,010.67 = 9,912.70/x
  3. Step 3: Cross multiply
    12,680.20x = 19,010.67 × 9,912.70
  4. Step 4: Simplify right side
    12,680.20x = 188,447,068.51
  5. Step 5: Solve for x
    x = 188,447,068.51/12,680.20
  6. Step 6: Final answer
    x = 14,861.52

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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.