Home / 19,219.40-28,821.90-13,358.60

Finding the Fourth Proportional to 19,219.40, 28,821.90 and 13,358.60

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Solution

The fourth proportional to 19,219.40, 28,821.90 and 13,358.60 is: 20,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,219.40 : 28,821.90 = 13,358.60 : x
  2. Step 2: Convert to fraction form
    19,219.40/28,821.90 = 13,358.60/x
  3. Step 3: Cross multiply
    19,219.40x = 28,821.90 × 13,358.60
  4. Step 4: Simplify right side
    19,219.40x = 385,020,233.34
  5. Step 5: Solve for x
    x = 385,020,233.34/19,219.40
  6. Step 6: Final answer
    x = 20,032.90

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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.