Home / 13,453.63-20,172.85-6,435.33

Finding the Fourth Proportional to 13,453.63, 20,172.85 and 6,435.33

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Solution

The fourth proportional to 13,453.63, 20,172.85 and 6,435.33 is: 9,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.63 : 20,172.85 = 6,435.33 : x
  2. Step 2: Convert to fraction form
    13,453.63/20,172.85 = 6,435.33/x
  3. Step 3: Cross multiply
    13,453.63x = 20,172.85 × 6,435.33
  4. Step 4: Simplify right side
    13,453.63x = 129,818,968.53
  5. Step 5: Solve for x
    x = 129,818,968.53/13,453.63
  6. Step 6: Final answer
    x = 9,649.37

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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.