Home / 13,719.42-18,932.88-7,751.64

Finding the Fourth Proportional to 13,719.42, 18,932.88 and 7,751.64

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Solution

The fourth proportional to 13,719.42, 18,932.88 and 7,751.64 is: 10,697.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.42 : 18,932.88 = 7,751.64 : x
  2. Step 2: Convert to fraction form
    13,719.42/18,932.88 = 7,751.64/x
  3. Step 3: Cross multiply
    13,719.42x = 18,932.88 × 7,751.64
  4. Step 4: Simplify right side
    13,719.42x = 146,760,869.92
  5. Step 5: Solve for x
    x = 146,760,869.92/13,719.42
  6. Step 6: Final answer
    x = 10,697.31

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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.