Home / 13,719.58-18,932.88-7,751.24

Finding the Fourth Proportional to 13,719.58, 18,932.88 and 7,751.24

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Solution

The fourth proportional to 13,719.58, 18,932.88 and 7,751.24 is: 10,696.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.58 : 18,932.88 = 7,751.24 : x
  2. Step 2: Convert to fraction form
    13,719.58/18,932.88 = 7,751.24/x
  3. Step 3: Cross multiply
    13,719.58x = 18,932.88 × 7,751.24
  4. Step 4: Simplify right side
    13,719.58x = 146,753,296.77
  5. Step 5: Solve for x
    x = 146,753,296.77/13,719.58
  6. Step 6: Final answer
    x = 10,696.63

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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.