Home / 13,569.99-20,357.91-4,209.81

Finding the Fourth Proportional to 13,569.99, 20,357.91 and 4,209.81

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Solution

The fourth proportional to 13,569.99, 20,357.91 and 4,209.81 is: 6,315.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.99 : 20,357.91 = 4,209.81 : x
  2. Step 2: Convert to fraction form
    13,569.99/20,357.91 = 4,209.81/x
  3. Step 3: Cross multiply
    13,569.99x = 20,357.91 × 4,209.81
  4. Step 4: Simplify right side
    13,569.99x = 85,702,933.10
  5. Step 5: Solve for x
    x = 85,702,933.10/13,569.99
  6. Step 6: Final answer
    x = 6,315.62

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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.