Home / 14,338.80-21,511.28-4,979.12

Finding the Fourth Proportional to 14,338.80, 21,511.28 and 4,979.12

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Solution

The fourth proportional to 14,338.80, 21,511.28 and 4,979.12 is: 7,469.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,338.80 : 21,511.28 = 4,979.12 : x
  2. Step 2: Convert to fraction form
    14,338.80/21,511.28 = 4,979.12/x
  3. Step 3: Cross multiply
    14,338.80x = 21,511.28 × 4,979.12
  4. Step 4: Simplify right side
    14,338.80x = 107,107,244.47
  5. Step 5: Solve for x
    x = 107,107,244.47/14,338.80
  6. Step 6: Final answer
    x = 7,469.75

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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.