Home / 13,428.20-20,127.72-4,658.33

Finding the Fourth Proportional to 13,428.20, 20,127.72 and 4,658.33

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Solution

The fourth proportional to 13,428.20, 20,127.72 and 4,658.33 is: 6,982.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.20 : 20,127.72 = 4,658.33 : x
  2. Step 2: Convert to fraction form
    13,428.20/20,127.72 = 4,658.33/x
  3. Step 3: Cross multiply
    13,428.20x = 20,127.72 × 4,658.33
  4. Step 4: Simplify right side
    13,428.20x = 93,761,561.91
  5. Step 5: Solve for x
    x = 93,761,561.91/13,428.20
  6. Step 6: Final answer
    x = 6,982.44

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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.