Home / 18,811.68-25,900.98-15,973.08

Finding the Fourth Proportional to 18,811.68, 25,900.98 and 15,973.08

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Solution

The fourth proportional to 18,811.68, 25,900.98 and 15,973.08 is: 21,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.68 : 25,900.98 = 15,973.08 : x
  2. Step 2: Convert to fraction form
    18,811.68/25,900.98 = 15,973.08/x
  3. Step 3: Cross multiply
    18,811.68x = 25,900.98 × 15,973.08
  4. Step 4: Simplify right side
    18,811.68x = 413,718,425.62
  5. Step 5: Solve for x
    x = 413,718,425.62/18,811.68
  6. Step 6: Final answer
    x = 21,992.64

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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.