Home / 13,338.63-20,020.91-6,417.99

Finding the Fourth Proportional to 13,338.63, 20,020.91 and 6,417.99

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Solution

The fourth proportional to 13,338.63, 20,020.91 and 6,417.99 is: 9,633.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.63 : 20,020.91 = 6,417.99 : x
  2. Step 2: Convert to fraction form
    13,338.63/20,020.91 = 6,417.99/x
  3. Step 3: Cross multiply
    13,338.63x = 20,020.91 × 6,417.99
  4. Step 4: Simplify right side
    13,338.63x = 128,493,968.08
  5. Step 5: Solve for x
    x = 128,493,968.08/13,338.63
  6. Step 6: Final answer
    x = 9,633.22

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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.