Home / 13,694.47-18,898.31-7,406.84

Finding the Fourth Proportional to 13,694.47, 18,898.31 and 7,406.84

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Solution

The fourth proportional to 13,694.47, 18,898.31 and 7,406.84 is: 10,221.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.47 : 18,898.31 = 7,406.84 : x
  2. Step 2: Convert to fraction form
    13,694.47/18,898.31 = 7,406.84/x
  3. Step 3: Cross multiply
    13,694.47x = 18,898.31 × 7,406.84
  4. Step 4: Simplify right side
    13,694.47x = 139,976,824.20
  5. Step 5: Solve for x
    x = 139,976,824.20/13,694.47
  6. Step 6: Final answer
    x = 10,221.41

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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.