Home / 15,511.14-21,404.91-8,437.38

Finding the Fourth Proportional to 15,511.14, 21,404.91 and 8,437.38

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Solution

The fourth proportional to 15,511.14, 21,404.91 and 8,437.38 is: 11,643.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.14 : 21,404.91 = 8,437.38 : x
  2. Step 2: Convert to fraction form
    15,511.14/21,404.91 = 8,437.38/x
  3. Step 3: Cross multiply
    15,511.14x = 21,404.91 × 8,437.38
  4. Step 4: Simplify right side
    15,511.14x = 180,601,359.54
  5. Step 5: Solve for x
    x = 180,601,359.54/15,511.14
  6. Step 6: Final answer
    x = 11,643.33

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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.