Home / 13,724.51-18,939.74-7,436.88

Finding the Fourth Proportional to 13,724.51, 18,939.74 and 7,436.88

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Solution

The fourth proportional to 13,724.51, 18,939.74 and 7,436.88 is: 10,262.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.51 : 18,939.74 = 7,436.88 : x
  2. Step 2: Convert to fraction form
    13,724.51/18,939.74 = 7,436.88/x
  3. Step 3: Cross multiply
    13,724.51x = 18,939.74 × 7,436.88
  4. Step 4: Simplify right side
    13,724.51x = 140,852,536.43
  5. Step 5: Solve for x
    x = 140,852,536.43/13,724.51
  6. Step 6: Final answer
    x = 10,262.85

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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.