Home / 19,838.80-29,722.20-9,427.60

Finding the Fourth Proportional to 19,838.80, 29,722.20 and 9,427.60

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Solution

The fourth proportional to 19,838.80, 29,722.20 and 9,427.60 is: 14,124.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,838.80 : 29,722.20 = 9,427.60 : x
  2. Step 2: Convert to fraction form
    19,838.80/29,722.20 = 9,427.60/x
  3. Step 3: Cross multiply
    19,838.80x = 29,722.20 × 9,427.60
  4. Step 4: Simplify right side
    19,838.80x = 280,209,012.72
  5. Step 5: Solve for x
    x = 280,209,012.72/19,838.80
  6. Step 6: Final answer
    x = 14,124.29

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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.