Home / 18,711.87-25,763.45-15,873.36

Finding the Fourth Proportional to 18,711.87, 25,763.45 and 15,873.36

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Solution

The fourth proportional to 18,711.87, 25,763.45 and 15,873.36 is: 21,855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.87 : 25,763.45 = 15,873.36 : x
  2. Step 2: Convert to fraction form
    18,711.87/25,763.45 = 15,873.36/x
  3. Step 3: Cross multiply
    18,711.87x = 25,763.45 × 15,873.36
  4. Step 4: Simplify right side
    18,711.87x = 408,952,437.33
  5. Step 5: Solve for x
    x = 408,952,437.33/18,711.87
  6. Step 6: Final answer
    x = 21,855.24

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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.