Home / 13,582.38-20,374.20-7,021.38

Finding the Fourth Proportional to 13,582.38, 20,374.20 and 7,021.38

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Solution

The fourth proportional to 13,582.38, 20,374.20 and 7,021.38 is: 10,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.38 : 20,374.20 = 7,021.38 : x
  2. Step 2: Convert to fraction form
    13,582.38/20,374.20 = 7,021.38/x
  3. Step 3: Cross multiply
    13,582.38x = 20,374.20 × 7,021.38
  4. Step 4: Simplify right side
    13,582.38x = 143,055,000.40
  5. Step 5: Solve for x
    x = 143,055,000.40/13,582.38
  6. Step 6: Final answer
    x = 10,532.40

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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.