Home / 28,581.20-39,442.22-15,834.78

Finding the Fourth Proportional to 28,581.20, 39,442.22 and 15,834.78

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Solution

The fourth proportional to 28,581.20, 39,442.22 and 15,834.78 is: 21,852.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,581.20 : 39,442.22 = 15,834.78 : x
  2. Step 2: Convert to fraction form
    28,581.20/39,442.22 = 15,834.78/x
  3. Step 3: Cross multiply
    28,581.20x = 39,442.22 × 15,834.78
  4. Step 4: Simplify right side
    28,581.20x = 624,558,876.41
  5. Step 5: Solve for x
    x = 624,558,876.41/28,581.20
  6. Step 6: Final answer
    x = 21,852.09

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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.