Home / 21,899.46-30,221.25-11,827.90

Finding the Fourth Proportional to 21,899.46, 30,221.25 and 11,827.90

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Solution

The fourth proportional to 21,899.46, 30,221.25 and 11,827.90 is: 16,322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.46 : 30,221.25 = 11,827.90 : x
  2. Step 2: Convert to fraction form
    21,899.46/30,221.25 = 11,827.90/x
  3. Step 3: Cross multiply
    21,899.46x = 30,221.25 × 11,827.90
  4. Step 4: Simplify right side
    21,899.46x = 357,453,960.65
  5. Step 5: Solve for x
    x = 357,453,960.65/21,899.46
  6. Step 6: Final answer
    x = 16,322.50

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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.