Home / 13,579.38-18,719.92-9,533.90

Finding the Fourth Proportional to 13,579.38, 18,719.92 and 9,533.90

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Solution

The fourth proportional to 13,579.38, 18,719.92 and 9,533.90 is: 13,143.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.38 : 18,719.92 = 9,533.90 : x
  2. Step 2: Convert to fraction form
    13,579.38/18,719.92 = 9,533.90/x
  3. Step 3: Cross multiply
    13,579.38x = 18,719.92 × 9,533.90
  4. Step 4: Simplify right side
    13,579.38x = 178,473,727.85
  5. Step 5: Solve for x
    x = 178,473,727.85/13,579.38
  6. Step 6: Final answer
    x = 13,143.00

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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.