Home / 13,694.52-18,898.40-7,406.88

Finding the Fourth Proportional to 13,694.52, 18,898.40 and 7,406.88

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Solution

The fourth proportional to 13,694.52, 18,898.40 and 7,406.88 is: 10,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.52 : 18,898.40 = 7,406.88 : x
  2. Step 2: Convert to fraction form
    13,694.52/18,898.40 = 7,406.88/x
  3. Step 3: Cross multiply
    13,694.52x = 18,898.40 × 7,406.88
  4. Step 4: Simplify right side
    13,694.52x = 139,978,180.99
  5. Step 5: Solve for x
    x = 139,978,180.99/13,694.52
  6. Step 6: Final answer
    x = 10,221.47

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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.