Home / 18,921.34-28,381.78-5,773.75

Finding the Fourth Proportional to 18,921.34, 28,381.78 and 5,773.75

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Solution

The fourth proportional to 18,921.34, 28,381.78 and 5,773.75 is: 8,660.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.34 : 28,381.78 = 5,773.75 : x
  2. Step 2: Convert to fraction form
    18,921.34/28,381.78 = 5,773.75/x
  3. Step 3: Cross multiply
    18,921.34x = 28,381.78 × 5,773.75
  4. Step 4: Simplify right side
    18,921.34x = 163,869,216.89
  5. Step 5: Solve for x
    x = 163,869,216.89/18,921.34
  6. Step 6: Final answer
    x = 8,660.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.