Home / 13,998.70-20,990.91-4,635.33

Finding the Fourth Proportional to 13,998.70, 20,990.91 and 4,635.33

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Solution

The fourth proportional to 13,998.70, 20,990.91 and 4,635.33 is: 6,950.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.70 : 20,990.91 = 4,635.33 : x
  2. Step 2: Convert to fraction form
    13,998.70/20,990.91 = 4,635.33/x
  3. Step 3: Cross multiply
    13,998.70x = 20,990.91 × 4,635.33
  4. Step 4: Simplify right side
    13,998.70x = 97,299,871.52
  5. Step 5: Solve for x
    x = 97,299,871.52/13,998.70
  6. Step 6: Final answer
    x = 6,950.64

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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.