Home / 21,515.22-32,371.25-12,756.29

Finding the Fourth Proportional to 21,515.22, 32,371.25 and 12,756.29

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Solution

The fourth proportional to 21,515.22, 32,371.25 and 12,756.29 is: 19,192.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.22 : 32,371.25 = 12,756.29 : x
  2. Step 2: Convert to fraction form
    21,515.22/32,371.25 = 12,756.29/x
  3. Step 3: Cross multiply
    21,515.22x = 32,371.25 × 12,756.29
  4. Step 4: Simplify right side
    21,515.22x = 412,936,827.02
  5. Step 5: Solve for x
    x = 412,936,827.02/21,515.22
  6. Step 6: Final answer
    x = 19,192.78

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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.