Home / 12,908.46-19,345.68-5,113.02

Finding the Fourth Proportional to 12,908.46, 19,345.68 and 5,113.02

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Solution

The fourth proportional to 12,908.46, 19,345.68 and 5,113.02 is: 7,662.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.46 : 19,345.68 = 5,113.02 : x
  2. Step 2: Convert to fraction form
    12,908.46/19,345.68 = 5,113.02/x
  3. Step 3: Cross multiply
    12,908.46x = 19,345.68 × 5,113.02
  4. Step 4: Simplify right side
    12,908.46x = 98,914,848.75
  5. Step 5: Solve for x
    x = 98,914,848.75/12,908.46
  6. Step 6: Final answer
    x = 7,662.79

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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.