Home / 20,722.67-28,588.73-14,438.69

Finding the Fourth Proportional to 20,722.67, 28,588.73 and 14,438.69

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Solution

The fourth proportional to 20,722.67, 28,588.73 and 14,438.69 is: 19,919.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.67 : 28,588.73 = 14,438.69 : x
  2. Step 2: Convert to fraction form
    20,722.67/28,588.73 = 14,438.69/x
  3. Step 3: Cross multiply
    20,722.67x = 28,588.73 × 14,438.69
  4. Step 4: Simplify right side
    20,722.67x = 412,783,737.77
  5. Step 5: Solve for x
    x = 412,783,737.77/20,722.67
  6. Step 6: Final answer
    x = 19,919.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.