Home / 13,717.28-18,929.82-7,429.64

Finding the Fourth Proportional to 13,717.28, 18,929.82 and 7,429.64

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Solution

The fourth proportional to 13,717.28, 18,929.82 and 7,429.64 is: 10,252.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.28 : 18,929.82 = 7,429.64 : x
  2. Step 2: Convert to fraction form
    13,717.28/18,929.82 = 7,429.64/x
  3. Step 3: Cross multiply
    13,717.28x = 18,929.82 × 7,429.64
  4. Step 4: Simplify right side
    13,717.28x = 140,641,747.86
  5. Step 5: Solve for x
    x = 140,641,747.86/13,717.28
  6. Step 6: Final answer
    x = 10,252.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.