Home / 18,813.18-25,903.08-15,974.58

Finding the Fourth Proportional to 18,813.18, 25,903.08 and 15,974.58

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Solution

The fourth proportional to 18,813.18, 25,903.08 and 15,974.58 is: 21,994.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.18 : 25,903.08 = 15,974.58 : x
  2. Step 2: Convert to fraction form
    18,813.18/25,903.08 = 15,974.58/x
  3. Step 3: Cross multiply
    18,813.18x = 25,903.08 × 15,974.58
  4. Step 4: Simplify right side
    18,813.18x = 413,790,823.71
  5. Step 5: Solve for x
    x = 413,790,823.71/18,813.18
  6. Step 6: Final answer
    x = 21,994.73

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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.