Home / 28,704.18-42,993.78-13,881.84

Finding the Fourth Proportional to 28,704.18, 42,993.78 and 13,881.84

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Solution

The fourth proportional to 28,704.18, 42,993.78 and 13,881.84 is: 20,792.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,704.18 : 42,993.78 = 13,881.84 : x
  2. Step 2: Convert to fraction form
    28,704.18/42,993.78 = 13,881.84/x
  3. Step 3: Cross multiply
    28,704.18x = 42,993.78 × 13,881.84
  4. Step 4: Simplify right side
    28,704.18x = 596,832,774.96
  5. Step 5: Solve for x
    x = 596,832,774.96/28,704.18
  6. Step 6: Final answer
    x = 20,792.54

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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.