Home / 21,983.08-30,336.54-11,911.45

Finding the Fourth Proportional to 21,983.08, 30,336.54 and 11,911.45

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Solution

The fourth proportional to 21,983.08, 30,336.54 and 11,911.45 is: 16,437.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.08 : 30,336.54 = 11,911.45 : x
  2. Step 2: Convert to fraction form
    21,983.08/30,336.54 = 11,911.45/x
  3. Step 3: Cross multiply
    21,983.08x = 30,336.54 × 11,911.45
  4. Step 4: Simplify right side
    21,983.08x = 361,352,179.38
  5. Step 5: Solve for x
    x = 361,352,179.38/21,983.08
  6. Step 6: Final answer
    x = 16,437.74

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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.