Home / 13,582.82-20,362.08-8,638.58

Finding the Fourth Proportional to 13,582.82, 20,362.08 and 8,638.58

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Solution

The fourth proportional to 13,582.82, 20,362.08 and 8,638.58 is: 12,950.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.82 : 20,362.08 = 8,638.58 : x
  2. Step 2: Convert to fraction form
    13,582.82/20,362.08 = 8,638.58/x
  3. Step 3: Cross multiply
    13,582.82x = 20,362.08 × 8,638.58
  4. Step 4: Simplify right side
    13,582.82x = 175,899,457.05
  5. Step 5: Solve for x
    x = 175,899,457.05/13,582.82
  6. Step 6: Final answer
    x = 12,950.14

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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.