Home / 20,472.21-30,702.65-5,679.99

Finding the Fourth Proportional to 20,472.21, 30,702.65 and 5,679.99

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Solution

The fourth proportional to 20,472.21, 30,702.65 and 5,679.99 is: 8,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.21 : 30,702.65 = 5,679.99 : x
  2. Step 2: Convert to fraction form
    20,472.21/30,702.65 = 5,679.99/x
  3. Step 3: Cross multiply
    20,472.21x = 30,702.65 × 5,679.99
  4. Step 4: Simplify right side
    20,472.21x = 174,390,716.57
  5. Step 5: Solve for x
    x = 174,390,716.57/20,472.21
  6. Step 6: Final answer
    x = 8,518.41

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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.