Home / 12,980.87-19,471.71-4,096.28

Finding the Fourth Proportional to 12,980.87, 19,471.71 and 4,096.28

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Solution

The fourth proportional to 12,980.87, 19,471.71 and 4,096.28 is: 6,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,980.87 : 19,471.71 = 4,096.28 : x
  2. Step 2: Convert to fraction form
    12,980.87/19,471.71 = 4,096.28/x
  3. Step 3: Cross multiply
    12,980.87x = 19,471.71 × 4,096.28
  4. Step 4: Simplify right side
    12,980.87x = 79,761,551.90
  5. Step 5: Solve for x
    x = 79,761,551.90/12,980.87
  6. Step 6: Final answer
    x = 6,144.55

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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.