Home / 13,927.20-20,890.88-3,538.96

Finding the Fourth Proportional to 13,927.20, 20,890.88 and 3,538.96

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Solution

The fourth proportional to 13,927.20, 20,890.88 and 3,538.96 is: 5,308.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,927.20 : 20,890.88 = 3,538.96 : x
  2. Step 2: Convert to fraction form
    13,927.20/20,890.88 = 3,538.96/x
  3. Step 3: Cross multiply
    13,927.20x = 20,890.88 × 3,538.96
  4. Step 4: Simplify right side
    13,927.20x = 73,931,988.68
  5. Step 5: Solve for x
    x = 73,931,988.68/13,927.20
  6. Step 6: Final answer
    x = 5,308.46

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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.