Home / 13,979.82-20,979.44-9,037.20

Finding the Fourth Proportional to 13,979.82, 20,979.44 and 9,037.20

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Solution

The fourth proportional to 13,979.82, 20,979.44 and 9,037.20 is: 13,562.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.82 : 20,979.44 = 9,037.20 : x
  2. Step 2: Convert to fraction form
    13,979.82/20,979.44 = 9,037.20/x
  3. Step 3: Cross multiply
    13,979.82x = 20,979.44 × 9,037.20
  4. Step 4: Simplify right side
    13,979.82x = 189,595,395.17
  5. Step 5: Solve for x
    x = 189,595,395.17/13,979.82
  6. Step 6: Final answer
    x = 13,562.08

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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.