Home / 21,719.14-29,975.24-12,162.67

Finding the Fourth Proportional to 21,719.14, 29,975.24 and 12,162.67

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Solution

The fourth proportional to 21,719.14, 29,975.24 and 12,162.67 is: 16,786.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.14 : 29,975.24 = 12,162.67 : x
  2. Step 2: Convert to fraction form
    21,719.14/29,975.24 = 12,162.67/x
  3. Step 3: Cross multiply
    21,719.14x = 29,975.24 × 12,162.67
  4. Step 4: Simplify right side
    21,719.14x = 364,578,952.29
  5. Step 5: Solve for x
    x = 364,578,952.29/21,719.14
  6. Step 6: Final answer
    x = 16,786.07

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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.