Home / 13,935.79-20,904.38-5,614.69

Finding the Fourth Proportional to 13,935.79, 20,904.38 and 5,614.69

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Solution

The fourth proportional to 13,935.79, 20,904.38 and 5,614.69 is: 8,422.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.79 : 20,904.38 = 5,614.69 : x
  2. Step 2: Convert to fraction form
    13,935.79/20,904.38 = 5,614.69/x
  3. Step 3: Cross multiply
    13,935.79x = 20,904.38 × 5,614.69
  4. Step 4: Simplify right side
    13,935.79x = 117,371,613.34
  5. Step 5: Solve for x
    x = 117,371,613.34/13,935.79
  6. Step 6: Final answer
    x = 8,422.32

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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.