Home / 13,179.66-18,189.45-7,359.36

Finding the Fourth Proportional to 13,179.66, 18,189.45 and 7,359.36

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Solution

The fourth proportional to 13,179.66, 18,189.45 and 7,359.36 is: 10,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.66 : 18,189.45 = 7,359.36 : x
  2. Step 2: Convert to fraction form
    13,179.66/18,189.45 = 7,359.36/x
  3. Step 3: Cross multiply
    13,179.66x = 18,189.45 × 7,359.36
  4. Step 4: Simplify right side
    13,179.66x = 133,862,710.75
  5. Step 5: Solve for x
    x = 133,862,710.75/13,179.66
  6. Step 6: Final answer
    x = 10,156.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.