Home / 12,719.92-19,065.12-4,817.40

Finding the Fourth Proportional to 12,719.92, 19,065.12 and 4,817.40

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Solution

The fourth proportional to 12,719.92, 19,065.12 and 4,817.40 is: 7,220.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.92 : 19,065.12 = 4,817.40 : x
  2. Step 2: Convert to fraction form
    12,719.92/19,065.12 = 4,817.40/x
  3. Step 3: Cross multiply
    12,719.92x = 19,065.12 × 4,817.40
  4. Step 4: Simplify right side
    12,719.92x = 91,844,309.09
  5. Step 5: Solve for x
    x = 91,844,309.09/12,719.92
  6. Step 6: Final answer
    x = 7,220.51

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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.