Home / 13,790.08-20,680.59-4,427.88

Finding the Fourth Proportional to 13,790.08, 20,680.59 and 4,427.88

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Solution

The fourth proportional to 13,790.08, 20,680.59 and 4,427.88 is: 6,640.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.08 : 20,680.59 = 4,427.88 : x
  2. Step 2: Convert to fraction form
    13,790.08/20,680.59 = 4,427.88/x
  3. Step 3: Cross multiply
    13,790.08x = 20,680.59 × 4,427.88
  4. Step 4: Simplify right side
    13,790.08x = 91,571,126.53
  5. Step 5: Solve for x
    x = 91,571,126.53/13,790.08
  6. Step 6: Final answer
    x = 6,640.36

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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.