Home / 13,423.12-20,134.88-4,658.31

Finding the Fourth Proportional to 13,423.12, 20,134.88 and 4,658.31

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Solution

The fourth proportional to 13,423.12, 20,134.88 and 4,658.31 is: 6,987.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.12 : 20,134.88 = 4,658.31 : x
  2. Step 2: Convert to fraction form
    13,423.12/20,134.88 = 4,658.31/x
  3. Step 3: Cross multiply
    13,423.12x = 20,134.88 × 4,658.31
  4. Step 4: Simplify right side
    13,423.12x = 93,794,512.85
  5. Step 5: Solve for x
    x = 93,794,512.85/13,423.12
  6. Step 6: Final answer
    x = 6,987.53

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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.