Home / 21,619.50-32,370.82-11,209.38

Finding the Fourth Proportional to 21,619.50, 32,370.82 and 11,209.38

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Solution

The fourth proportional to 21,619.50, 32,370.82 and 11,209.38 is: 16,783.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.50 : 32,370.82 = 11,209.38 : x
  2. Step 2: Convert to fraction form
    21,619.50/32,370.82 = 11,209.38/x
  3. Step 3: Cross multiply
    21,619.50x = 32,370.82 × 11,209.38
  4. Step 4: Simplify right side
    21,619.50x = 362,856,822.29
  5. Step 5: Solve for x
    x = 362,856,822.29/21,619.50
  6. Step 6: Final answer
    x = 16,783.77

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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.