Home / 18,790.10-25,877.85-18,381.86

Finding the Fourth Proportional to 18,790.10, 25,877.85 and 18,381.86

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Solution

The fourth proportional to 18,790.10, 25,877.85 and 18,381.86 is: 25,315.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.10 : 25,877.85 = 18,381.86 : x
  2. Step 2: Convert to fraction form
    18,790.10/25,877.85 = 18,381.86/x
  3. Step 3: Cross multiply
    18,790.10x = 25,877.85 × 18,381.86
  4. Step 4: Simplify right side
    18,790.10x = 475,683,015.80
  5. Step 5: Solve for x
    x = 475,683,015.80/18,790.10
  6. Step 6: Final answer
    x = 25,315.62

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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.