Home / 13,621.41-20,427.80-4,385.25

Finding the Fourth Proportional to 13,621.41, 20,427.80 and 4,385.25

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Solution

The fourth proportional to 13,621.41, 20,427.80 and 4,385.25 is: 6,576.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.41 : 20,427.80 = 4,385.25 : x
  2. Step 2: Convert to fraction form
    13,621.41/20,427.80 = 4,385.25/x
  3. Step 3: Cross multiply
    13,621.41x = 20,427.80 × 4,385.25
  4. Step 4: Simplify right side
    13,621.41x = 89,580,988.02
  5. Step 5: Solve for x
    x = 89,580,988.02/13,621.41
  6. Step 6: Final answer
    x = 6,576.48

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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.