Home / 9,148.04-13,725.66-8,421.56

Finding the Fourth Proportional to 9,148.04, 13,725.66 and 8,421.56

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Solution

The fourth proportional to 9,148.04, 13,725.66 and 8,421.56 is: 12,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,148.04 : 13,725.66 = 8,421.56 : x
  2. Step 2: Convert to fraction form
    9,148.04/13,725.66 = 8,421.56/x
  3. Step 3: Cross multiply
    9,148.04x = 13,725.66 × 8,421.56
  4. Step 4: Simplify right side
    9,148.04x = 115,591,469.23
  5. Step 5: Solve for x
    x = 115,591,469.23/9,148.04
  6. Step 6: Final answer
    x = 12,635.65

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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.